I have an user control with a few textboxes in it and how can I retain previous value of a textbox txtOne if a condition is not met in OnTextChanged event for the sum of txtA, txtB, txtC textboxes.
The variable "one" is considered as a previous value of the textbox. I have added the below code in usercontrol.
protected void txtOne_TextChanged(object sender, EventArgs e)
{
total = Convert.ToInt32(txtA.Text) + Convert.ToInt32(txtB.Text) + Convert.ToInt32(txtC.Text);
if (total > Convert.ToInt32(txtOne.Text.ToString()))
{
txtOne.Text = one.ToString();
}
}
Here "one" variable is getting value as 0. It should store previous value. Could you please give me a clue on where to store the value in "one" variable.
The code below is not in any way optimized or generalized. It is as close to your sample code as possible & designed to show you an answer based on your original code. I would suggest using comboboxes rather than textboxes, and/or using validation to make sure that the entries are all numeric. The code below doesn't go that far - it only answers your question based on the code you provided:
TextBox txtA = new TextBox();
TextBox txtB = new TextBox();
TextBox txtC = new TextBox();
int total = 0;
TextBox txtOne = new TextBox();
string newOne = "";
string someDefaultValue = "";
string lastOne = "";
if(txtA.Text.Length==0||txtB.Text.Length==0||txtC.Text.Length==0){
//user has not entered required fields -- abort
return;
}
bool isTextChanging = true;//CHANGE TO FALSE AT END OF PAGE_ONLOAD
protected void txtOne_TextChanged(object sender, EventArgs e)
{
if(!isTextChanging){
isTextChanging=true;
total = getTotal(new string[] { txtA.Text, txtB.Text, txtC.Text });
if (total > -1)
{
int totalTest = 0;
if (int.TryParse(txtOne.Text, out totalTest))
{
if (total > totalTest)
{
txtOne.Text = lastOne.Length > 0 ? lastOne : someDefaultValue;//default value for the first run when there is no last value
lastOne = newOne;//whatever the value of "one" is this time
}
}
else
{
MessageBox.Show("YOu must only enter numbers");
}
}
}
isTextChanging=false;
}
private int getTotal(string[] inputs)
{
int total = 0;
int subTotal = 0;
foreach(string input in inputs)
{
if(int.TryParse(input,out subTotal)){
total += subTotal;
}else{
MessageBox.Show("You must only enter numbers");
return -1;
}
}
return total;
}
Ok - I'm confused. It may be a language thing. Is this what you're trying to accomplish, but with textboxes instead of dropdownlists?
Front end:
<%# Page Language="C#" AutoEventWireup="true" CodeBehind="WebForm1.aspx.cs" Inherits="SO_Web.WebForm1" %>
<!DOCTYPE html>
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title></title>
</head>
<body>
<form id="form1" runat="server">
<div id="div_Boxes" runat="server">
</div>
</form>
</body>
</html>
Back End:
protected void Page_Load(object sender, EventArgs e)
{
createBoxes();
}
string[] boxNames = { "One", "Two", "Three" };
private void createBoxes()
{
int x = 0;
int y = 10;
Panel p = new Panel();
foreach (string name in boxNames)
{
Label l = new Label();
l.ID = "lbl_" + name;
l.Text = "Select Value " + name;
l.Style.Add("float", "left");
DropDownList c = new DropDownList();
c.ID = "cbx_" + name;
c.Items.Add("Select One");
for (int i = 1; i < 101; i++)
{
c.Items.Add(i.ToString());
}
c.SelectedIndex = 0;
c.AutoPostBack = true;
c.Style.Add("display", "block");
c.SelectedIndexChanged += cbx_Changed;
p.Controls.Add(l);
p.Controls.Add(c);
}
Label lbl_Total = new Label();
lbl_Total.Text = "Your Total:";
TextBox txt_Total = new TextBox();
txt_Total.ID = "txt_Total";
txt_Total.Width = 75;
p.Controls.Add(lbl_Total);
p.Controls.Add(txt_Total);
p.Width = 300;
p.Height = 200;
div_Boxes.Controls.Add(p);
}
protected void cbx_Changed(object sender, EventArgs e)
{
bool proceed = true;
int total = 0;
foreach (string name in boxNames)
{
DropDownList c = (DropDownList)findControl(this.Page.Controls,"cbx_" + name);
if (c.SelectedIndex == 0)
{
proceed = false;
}
else
{
total += c.SelectedIndex;
}
}
if (proceed)
{
((TextBox)findControl(this.Page.Controls,"txt_Total")).Text = total.ToString("C2");
}
}
private Control findControl(ControlCollection page, string id)
{
foreach (Control c in page)
{
if (c.ID == id)
{
return c;
}
if (c.HasControls())
{
var res = findControl(c.Controls, id);
if (res != null)
{
return res;
}
}
}
return null;
}
But you want to use texboxes and allow the user to type entries, and you want a MAX value of 110. If the user enters values under 110 for all three boxes, you want the total. If the user enters >110 for any box, you want the value reset to 100? Is that correct?
Behind the code C#, when the user select 3(dropdownlist) then press execute button, it will auto generate 3 textboxes. After user fill out names on 3 textboxes then click request button, I want the 3 names that user entered display on different result textbox. How do I do that?
Here are C# codes,
protected void ExecuteCode_Click(object sender, EventArgs e)
{
int amount = Convert.ToInt32(DropDownListIP.SelectedValue);
for (int num = 1; num <= amount; num++)
{
HtmlGenericControl div = new HtmlGenericControl("div");
TextBox t = new TextBox();
t.ID = "textBoxName" + num.ToString();
div.Controls.Add(t);
div1.Controls.Add(div);
}
ButtonRequest.Visible = true;
}
protected void ButtonRequest_Click(object sender, EventArgs e)
{
string str = "";
foreach (Control c in phDynamicTextBox.Controls)
{
try
{
TextBox t = (TextBox)c;
// gets textbox ID property
//Response.Write(t.ID);
str = t.Text;
}
catch
{
}
}
TextBoxFinal.Text = str;
}
Then HTML codes,
<div id="div1" runat="server">
<asp:PlaceHolder ID="phDynamicTextBox" runat="server" />
</div>
you cannot access to control that create dynamically on postback, but you can try get input value from request like this
protected void ExecuteCode_Click(object sender, EventArgs e)
{
List<string> tbids = new List<string>();
int amount = Convert.ToInt32(DropDownListIP.SelectedValue);
for (int num = 1; num <= amount; num++)
{
HtmlGenericControl div = new HtmlGenericControl("div");
TextBox t = new TextBox();
t.ID = "textBoxName" + num.ToString();
div.Controls.Add(t);
phDynamicTextBox.Controls.Add(div);
tbids.Add(t.ID);
}
Session["tbids"] = tbids;
ButtonRequest.Visible = true;
}
protected void ButtonRequest_Click(object sender, EventArgs e)
{
string str = "";
var tbids = (List<string>)Session["tbids"];
foreach (var id in tbids)
{
try
{
str += Request[id]+" "; //here get value tb with id;
}
catch
{
}
}
TextBoxFinal.Text = str;
}
One option is:
when you create the textbox you save the Id in a list in session, then you through the list and use it:
TextBox myTextbox = (TextBox)FindControl("name");
example:
List<string> list = (List<string>)Session["myList"];
TextBox myTextbox;
foreach (string item in list)
{
myTextbox = (TextBox)FindControl(item);
//in myTextbox you have the atribute Text with the informatcion
}
Sorry for my english.
I have this code below that create rows and cells for a list of products. There is a button that I want to use to get additional product information. Basically the user will search for something and it will display limited results. When the user clicks on the button it will call a method that will do something else.
How do I get that button to pass and ID or something to a method?
I tried the .Click but did not work to call the method. Currently the method only displays a messagebox.
for (rowCtr = 1; rowCtr <= rowCnt; rowCtr++)
{
// Create new row and add it to the table.
TableRow tRow = new TableRow();
Table1.Rows.Add(tRow);
for (cellCtr = 1; cellCtr <= cellCnt; cellCtr++)
{
// Create a new cell and add it to the row.
TableCell tCell = new TableCell();
if (rowCtr == 1 && cellCtr == 1)
{
Image ProductImage = new Image();
ProductImage.Height = 75;
ProductImage.Width = 75;
tCell.RowSpan = 5;
tCell.Controls.Add(ProductImage);
tRow.Cells.Add(tCell);
}
if (rowCtr == 1 && cellCtr == 2)
{
tCell.Text = "Title: Title of Product";
tRow.Cells.Add(tCell);
}
if (rowCtr == 2 && cellCtr == 2)
{
tCell.Text = "Weight (lbs): 54";
tRow.Cells.Add(tCell);
}
if (rowCtr == 4 && cellCtr == 2)
{
Button getOfferButton = new Button();
getOfferButton.Width = 100;
getOfferButton.Text = "Get Offer";
getOfferButton.Click += new EventHandler(getOffer);
tCell.Controls.Add(getOfferButton);
tRow.Cells.Add(tCell);
}
}
}
I think you should be using <asp:GridView /> control instead of generating this with markup. One way to handle this is use the OnCommand event and pass the ID as argument
getOfferButton.Click += new CommandEventHandler(RowButton_OnCommand);
getOfferButton.CommandArgument = "123";
and then the Handler
protected void RowButton_OnCommand(object sender, CommandEventArgs e)
{
string id = e.CommandArgument.ToString(); //could convert this to integer
}
First you need to return object list from your code behind , second you need to import ur BLL or BO what ever is name:
'<asp:Repeater ID="rptGrpAcc" runat="server" OnItemDataBound="rptAccident_ItemDataBound">
<ItemTemplate>
<tr style="cursor: pointer" onclick="SelectGrpAcc(this,<%#Eval("ID"%>);">
</ItemTemplate>
</asp:Repeter>'
<asp:HiddenField ID="hdnRowNum" runat="server" />
<asp:Button ID="btnShowRptDtl" runat="server" Text="ShowRptDtl" Style="display: none"
OnClick="btnShowRptDtl_Click" CausesValidation="false"/>
' <script type="text/javascript">
/*---------------for selecting row of repeator--------*/
function SelectGrpAcc(obj, ID) {
document.getElementById("<%=hdnRowNum.ClientID %>").value = ID;
document.getElementById("<%=btnShowRptDtl.ClientID %>").click();
}'
'protected void btnShowRptDtl_Click(object sender, EventArgs e)
{
btnAdd.Text= "update";
int Sn = ClsConvertTo.Int32(hdnRowNum.Value); // this is your ID in code behind
// add logic here
}'
When i am click on update button i got this error
my update click event
protected void btnUpdate_Click(object sender, CommandEventArgs e)
{
int idx = Convert.ToInt32(e.CommandArgument);
GridViewRow gr = gvResTasks.Rows[idx];
...
}
when idx value is upto 19 it works fine ..when it is greater than 19 this error came..
could you please help me on this
Updatebutton.aspx
<ItemTemplate> <asp:Button runat="server" ID="btnUpdate" Text="Update" OnCommand="btnUpdate_Click" CommandArgument="<%# Container.DataItemIndex %>" /> <%--<asp:Button runat="server" ID="Button1" Text="Update" onclick="btnUpdate_Click" />--%> </ItemTemplate>
updatebutton.aspx.cs
protected void btnUpdate_Click(object sender, CommandEventArgs e)
{
// int idx = Convert.ToInt32(e.CommandArgument);
int idx = Convert.ToInt32(e.CommandArgument);
GridViewRow gr = gvResTasks.Rows[idx];
Label hf = (Label)gr.FindControl("hdEmployeeID");
string sEmpID = hf.Text;
lblEmployeeID.Text = sEmpID;
lblEmployeeID2.Text = sEmpID;
int Rows = gvResTasks.Rows.Count;
for (int x = 0; x < Rows; x++)
{
GridViewRow tr = gvResTasks.Rows[x];
tr.CssClass = "WhiteBack";
}
ClearMessages();
gr.CssClass = "TealBack";
string sSubTaskID = gr.Cells[0].Text;
lblSubTaskID.Text = sSubTaskID;
lblSubTaskName.Text = #gr.Cells[1].Text;
LoadSubTaskInfo();
Single sProgress = 0;
Boolean bok = Single.TryParse(lblActualProgress.Text, out sProgress);
DateTime dPF = DateTime.Parse(lblPlannedFinish.Text);
if (dPF > DateTime.Now)
{
btnFinish.Enabled = false;
}
else if (dPF <= DateTime.Now)
{
if (sProgress >= 100)
{
btnFinish.Enabled = false;
}
else
{
btnFinish.Enabled = true;
}
//btnFinish.Enabled = true;
}
panelUpdate.CssClass = "float";
panelUpdate.Visible = false;
if (gr.Cells[7].Text != "True")
{
panelUpdate.Visible = true;
}
}
No need to use e.CommandArgument to find the GridViewRow. Just do this
GridViewRow gr = ((Button)sender).NamingContainer as GridViewRow;
How many rows do you have?
Try this:
int idx = Convert.ToInt32(e.CommandArgument);
if (idx < gvResTasks.Rows.Count)
{
GridViewRow gr = gvResTasks.Rows[idx];
}
Also, can you provide the btnUpdate ASPX code?
How can I allow selected rows in a DataGridView (DGV) to be moved up or down. I have done this before with a ListView. Unfortunetly, for me, replacing the DGV is not an option (curses). By the way, the DGV datasource is a Generic Collection.
The DGV has two buttons on the side, yes, UP & Down. Can anyone help point me in the right direction. I do have the code that I used for the ListView if it'll help (it did not help me).
Just to expand on Yoopergeek's answer, here's what I have.
I was not using a DataSource (data is being dropped to registry on form close, and reload on form load)
This sample will keep rows from being moved off the grid and lost, and reselect the cell the person was in as well.
To make things simpler for copy / paste, I modified so you need only change "gridTasks" to your DataGridView's name, rather than renaming it throughout the code.
This solution works only for single cell/row selected.
private void btnUp_Click(object sender, EventArgs e)
{
DataGridView dgv = gridTasks;
try
{
int totalRows = dgv.Rows.Count;
// get index of the row for the selected cell
int rowIndex = dgv.SelectedCells[ 0 ].OwningRow.Index;
if ( rowIndex == 0 )
return;
// get index of the column for the selected cell
int colIndex = dgv.SelectedCells[ 0 ].OwningColumn.Index;
DataGridViewRow selectedRow = dgv.Rows[ rowIndex ];
dgv.Rows.Remove( selectedRow );
dgv.Rows.Insert( rowIndex - 1, selectedRow );
dgv.ClearSelection();
dgv.Rows[ rowIndex - 1 ].Cells[ colIndex ].Selected = true;
}
catch { }
}
private void btnDown_Click(object sender, EventArgs e)
{
DataGridView dgv = gridTasks;
try
{
int totalRows = dgv.Rows.Count;
// get index of the row for the selected cell
int rowIndex = dgv.SelectedCells[ 0 ].OwningRow.Index;
if ( rowIndex == totalRows - 1 )
return;
// get index of the column for the selected cell
int colIndex = dgv.SelectedCells[ 0 ].OwningColumn.Index;
DataGridViewRow selectedRow = dgv.Rows[ rowIndex ];
dgv.Rows.Remove( selectedRow );
dgv.Rows.Insert( rowIndex + 1, selectedRow );
dgv.ClearSelection();
dgv.Rows[ rowIndex + 1 ].Cells[ colIndex ].Selected = true;
}
catch { }
}
This should work. I use a BindingSource instead of binding my List directly to the DataGridView:
private List<MyItem> items = new List<MyItem> {
new MyItem {Id = 0, Name = "Hello"},
new MyItem {Id = 1, Name = "World"},
new MyItem {Id = 2, Name = "Foo"},
new MyItem {Id = 3, Name = "Bar"},
new MyItem {Id = 4, Name = "Scott"},
new MyItem {Id = 5, Name = "Tiger"},
};
private BindingSource bs;
private void Form1_Load(object sender, EventArgs e)
{
bs = new BindingSource(items, string.Empty);
dataGridView1.DataSource = bs;
}
private void button1_Click(object sender, EventArgs e)
{
if (bs.Count <= 1) return; // one or zero elements
int position = bs.Position;
if (position <= 0) return; // already at top
bs.RaiseListChangedEvents = false;
MyItem current = (MyItem)bs.Current;
bs.Remove(current);
position--;
bs.Insert(position, current);
bs.Position = position;
bs.RaiseListChangedEvents = true;
bs.ResetBindings(false);
}
private void button2_Click(object sender, EventArgs e)
{
if (bs.Count <= 1) return; // one or zero elements
int position = bs.Position;
if (position == bs.Count - 1) return; // already at bottom
bs.RaiseListChangedEvents = false;
MyItem current = (MyItem)bs.Current;
bs.Remove(current);
position++;
bs.Insert(position, current);
bs.Position = position;
bs.RaiseListChangedEvents = true;
bs.ResetBindings(false);
}
public class MyItem
{
public int Id { get; set; }
public String Name { get; set; }
}
If you programatically change the ordering of the items in your collection, the DGV should reflect that automatically.
Sloppy, half-working example:
List<MyObj> foo = DGV.DataSource;
int idx = DGV.SelectedRows[0].Index;
int value = foo[idx];
foo.Remove(value);
foo.InsertAt(idx+1, value)
Some of that logic may be wrong, and this may not be the most efficient approach either. Also, it doesn't take into account multiple row selections.
Hmm, one last thing, if you're using a standard List or Collection this isn't going to go as smoothly. List and Collection on't emit events that the DGV finds useful for databinding. You could 'burp' the databinding every time you change the collection, but a better solution would be for you to use a System.ComponentModel.BindingList. When you change the ordering of the BindingList the DGV should reflect the change automatically.
There is a much simpler way that most posts here (in my opinion). Performing the action for an "up" button click is basically just a swap of rows with the one above. If you are controlling the values yourself (as the question was stated) then you just need to swap the values of the rows. Quick and simple!
NOTE: this works only when multiselect is disabled on the datagrid! As you can tell I am only paying attention to item at index 0 in the SelectedRows collection.
Here is what I used:
private void btnUp_Click(object sender, EventArgs e)
{
var row = dgvExportLocations.SelectedRows[0];
if (row != null && row.Index > 0)
{
var swapRow = dgvExportLocations.Rows[row.Index - 1];
object[] values = new object[swapRow.Cells.Count];
foreach (DataGridViewCell cell in swapRow.Cells)
{
values[cell.ColumnIndex] = cell.Value;
cell.Value = row.Cells[cell.ColumnIndex].Value;
}
foreach (DataGridViewCell cell in row.Cells)
cell.Value = values[cell.ColumnIndex];
dgvExportLocations.Rows[row.Index - 1].Selected = true;//have the selection follow the moving cell
}
}
To perform a "down" click you can do the opposite as well, same logic
First fill your datagridview,for example you got table with 3 colums
DataTable table = new DataTable();
table.Columns.Add("col1");
table.Columns.Add("col2");
table.Columns.Add("col3");
foreach (var i in yourTablesource(db,list,etc))
{
table.Rows.Add(i.col1, i.col2, i.col2);
}
datagridview1.DataSource = table;
Then, on button up click
int rowIndex;
private void btnUp_Click(object sender, EventArgs e)
{
rowIndex = datagridview1.SelectedCells[0].OwningRow.Index;
DataRow row = table.NewRow();
row[0] = datagridview1.Rows[rowIndex].Cells[0].Value.ToString();
row[1] = datagridview1.Rows[rowIndex].Cells[1].Value.ToString();
row[2] = datagridview1.Rows[rowIndex].Cells[2].Value.ToString();
if (rowIndex > 0)
{
table.Rows.RemoveAt(rowIndex);
table.Rows.InsertAt(row, rowIndex - 1);
datagridview1.ClearSelection();
datagridview1.Rows[rowIndex - 1].Selected = true;
}
}
Do the same thing for button down, just change row index from rowIndex - 1 to rowindex + 1 in your buttonDown_Click method
Was looking for this UP/DOWN button thing and glad that I found this.
Better to put the bs.RaiseListChangedEvents = false statement after the return or it doesn't work all the time.
And in C#3.0 you can add two extension methods to the BindingSource like this:
public static class BindingSourceExtension
{
public static void MoveUp( this BindingSource aBindingSource )
{
int position = aBindingSource.Position;
if (position == 0) return; // already at top
aBindingSource.RaiseListChangedEvents = false;
object current = aBindingSource.Current;
aBindingSource.Remove(current);
position--;
aBindingSource.Insert(position, current);
aBindingSource.Position = position;
aBindingSource.RaiseListChangedEvents = true;
aBindingSource.ResetBindings(false);
}
public static void MoveDown( this BindingSource aBindingSource )
{
int position = aBindingSource.Position;
if (position == aBindingSource.Count - 1) return; // already at bottom
aBindingSource.RaiseListChangedEvents = false;
object current = aBindingSource.Current;
aBindingSource.Remove(current);
position++;
aBindingSource.Insert(position, current);
aBindingSource.Position = position;
aBindingSource.RaiseListChangedEvents = true;
aBindingSource.ResetBindings(false);
}
}
Finally a good use for extension methods instead of all those bad String examples.. ;-)
DataGridViewRow BeginingRow = new DataGridViewRow();
int BeginingRowIndex ;
private void DataGridView1_CellMouseUp(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button != MouseButtons.Left ||e.RowIndex < 0 ) return;
if (BeginingRowIndex > e.RowIndex)
{
DataGridView1.Rows.Insert(e.RowIndex);
foreach (DataGridViewCell cellules in BeginingRow.Cells)
{
DataGridView1.Rows[e.RowIndex].Cells[cellules.ColumnIndex].Value = cellules.Value;
}
DataGridView1.Rows.RemoveAt(BeginingRowIndex + 1);
}
else
{
DataGridView1.Rows.Insert(e.RowIndex +1);
foreach (DataGridViewCell cellules in BeginingRow.Cells)
{
DataGridView1.Rows[e.RowIndex+1].Cells[cellules.ColumnIndex].Value = cellules.Value;
}
DataGridView1.Rows.RemoveAt(BeginingRowIndex);
}
DataGridView1.RowsDefaultCellStyle.ApplyStyle(BeginingRow.DefaultCellStyle);
DataGridView1.Rows[e.RowIndex].Selected = true;
}
private void DataGridView1_CellMouseDown(object sender, DataGridViewCellMouseEventArgs e)
{
if (e.Button != MouseButtons.Left ||e.RowIndex < 0 ) return;
BeginingRowIndex = e.RowIndex;
BeginingRow = DataGridView1.Rows[BeginingRowIndex];
BeginingRow.DefaultCellStyle = DataGridView1.Rows[BeginingRowIndex].DefaultCellStyle;
}
private void butUp_Click(object sender, EventArgs e)
{
DataTable dtTemp = gridView.DataSource as DataTable;
object[] arr = dtTemp.Rows[0].ItemArray;
for (int i = 1; i < dtTemp.Rows.Count; i++)
{
dtTemp.Rows[i - 1].ItemArray = dtTemp.Rows[i].ItemArray;
}
dtTemp.Rows[dtTemp.Rows.Count - 1].ItemArray = arr;
}
private void butDown_Click(object sender, EventArgs e)
{
DataTable dtTemp = gridView.DataSource as DataTable;
object[] arr = dtTemp.Rows[dtTemp.Rows.Count - 1].ItemArray;
for (int i = dtTemp.Rows.Count - 2; i >= 0; i--)
{
dtTemp.Rows[i + 1].ItemArray = dtTemp.Rows[i].ItemArray;
}
dtTemp.Rows[0].ItemArray = arr;
}
this is the shortest solution I have found to the problem and I just refactored a little bit the code found in:
http://dotnetspeaks.net/post/Moving-GridView-Rows-Up-Down-in-a-GridView-Control.aspx
<body>
<form id="form1" runat="server">
<asp:GridView ID="GridView1" Font-Names="Verdana" Font-Size="9pt" runat="server" OnRowCreated="GridView1_RowCreated"
AutoGenerateColumns="False" CellPadding="4" BorderColor="#507CD1" BorderStyle="Solid">
<Columns>
<asp:TemplateField HeaderText="First Name">
<ItemTemplate>
<asp:Label ID="txtFirstName" runat="server" Text='<%# Eval("FirstName") %>' />
</ItemTemplate>
</asp:TemplateField>
</Columns>
<HeaderStyle BackColor="#507CD1" Font-Bold="True" ForeColor="White" />
<AlternatingRowStyle BackColor="White" />
</asp:GridView>
<asp:Button ID="btnUp" runat="server" Text="Up" OnClick="btnUp_Click"/>
<asp:Button ID="btnDown" runat="server" Text="Down" OnClick="btnDown_Click" />
</form>
and with code behind...
public int SelectedRowIndex { get; set; }
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Test Records
GridView1.DataSource = Enumerable.Range(1, 5).Select(a => new
{
FirstName = String.Format("First Name {0}", a),
LastName = String.Format("Last Name {0}", a),
});
GridView1.DataBind();
}
}
protected void GridView1_RowCreated(object sender, GridViewRowEventArgs e)
{
if (e.Row.RowType == DataControlRowType.DataRow)
{
e.Row.Attributes["onmouseover"] = "this.style.cursor='pointer'";
e.Row.ToolTip = "Click to select row";
e.Row.Attributes["onclick"] = Page.ClientScript.GetPostBackClientHyperlink(GridView1, "Select$" + e.Row.RowIndex);
}
}
protected void btnUp_Click(object sender, EventArgs e)
{
var rows = GridView1.Rows.Cast<GridViewRow>().Where(a => a != GridView1.SelectedRow).ToList();
//If First Item, insert at end (rotating positions)
if (GridView1.SelectedRow.RowIndex.Equals(0))
{
rows.Add(GridView1.SelectedRow);
SelectedRowIndex = GridView1.Rows.Count -1;
}
else
{
SelectedRowIndex = GridView1.SelectedRow.RowIndex - 1;
rows.Insert(GridView1.SelectedRow.RowIndex - 1, GridView1.SelectedRow);
}
RebindGrid(rows);
}
protected void btnDown_Click(object sender, EventArgs e)
{
var rows = GridView1.Rows.Cast<GridViewRow>().Where(a => a != GridView1.SelectedRow).ToList();
//If Last Item, insert at beginning (rotating positions)
if (GridView1.SelectedRow.RowIndex.Equals(GridView1.Rows.Count - 1))
{
rows.Insert(0, GridView1.SelectedRow);
SelectedRowIndex = 0;
}
else
{
SelectedRowIndex = GridView1.SelectedRow.RowIndex + 1;
rows.Insert(GridView1.SelectedRow.RowIndex + 1, GridView1.SelectedRow);
}
RebindGrid(rows);
}
private void RebindGrid(IEnumerable<GridViewRow> rows)
{
GridView1.DataSource = rows.Select(a => new
{
FirstName = ((Label)a.FindControl("txtFirstName")).Text,
}).ToList();
GridView1.SelectedIndex = SelectedRowIndex;
GridView1.DataBind();
}
Header 3
private void buttonX8_Click(object sender, EventArgs e)//down
{
DataGridViewX grid = dataGridViewX1;
try
{
int totalRows = grid.Rows.Count;
int idx = grid.SelectedCells[0].OwningRow.Index;
if (idx == totalRows - 1 )
return;
int col = grid.SelectedCells[0].OwningColumn.Index;
DataGridViewRowCollection rows = grid.Rows;
DataGridViewRow row = rows[idx];
rows.Remove(row);
rows.Insert(idx + 1, row);
grid.ClearSelection();
grid.Rows[idx + 1].Cells[col].Selected = true;
private void buttonX8_Click(object sender, EventArgs e)//down
{
DataGridViewX grid = dataGridViewX1;
try
{
int totalRows = grid.Rows.Count;
int idx = grid.SelectedCells[0].OwningRow.Index;
if (idx == totalRows - 1 )
return;
int col = grid.SelectedCells[0].OwningColumn.Index;
DataGridViewRowCollection rows = grid.Rows;
DataGridViewRow row = rows[idx];
rows.Remove(row);
rows.Insert(idx + 1, row);
grid.ClearSelection();
grid.Rows[idx + 1].Cells[col].Selected = true;
}
catch { }
}
SchlaWiener's answer worked well, and I just wanna add something to it:
private void button1_Click(object sender, EventArgs e) //The button to move up
{
int position = bs.Position;
//.......neglected.......
dataGridView1.ClearSelection();
dataGridView1.Rows[position].Selected = true;
bs.MovePrevious();
}
Adding those 3 lines at the bottom to also make the selection move (both bindingSource and dataGridView), so that we can continuously click the bottom to move a row up.
For moving down just call bs.MoveNext()
(I have not enough reputation to post as comment yet)
data bound solution with multi-selection support, use SharpDevelop 4.4 to convert to C#.
<Extension()>
Sub MoveSelectionUp(dgv As DataGridView)
If dgv.CurrentCell Is Nothing Then Exit Sub
dgv.CurrentCell.OwningRow.Selected = True
Dim items = DirectCast(dgv.DataSource, BindingSource).List
Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
Dim indexAbove = selectedIndices(0) - 1
If indexAbove = -1 Then Exit Sub
Dim itemAbove = items(indexAbove)
items.RemoveAt(indexAbove)
Dim indexLastItem = selectedIndices(selectedIndices.Count - 1)
If indexLastItem = items.Count Then
items.Add(itemAbove)
Else
items.Insert(indexLastItem + 1, itemAbove)
End If
End Sub
<Extension()>
Sub MoveSelectionDown(dgv As DataGridView)
If dgv.CurrentCell Is Nothing Then Exit Sub
dgv.CurrentCell.OwningRow.Selected = True
Dim items = DirectCast(dgv.DataSource, BindingSource).List
Dim selectedIndices = dgv.SelectedRows.Cast(Of DataGridViewRow).Select(Function(row) row.Index).Sort
Dim indexBelow = selectedIndices(selectedIndices.Count - 1) + 1
If indexBelow >= items.Count Then Exit Sub
Dim itemBelow = items(indexBelow)
items.RemoveAt(indexBelow)
Dim indexAbove = selectedIndices(0) - 1
items.Insert(indexAbove + 1, itemBelow)
End Sub
// Down
DataGridViewRow row = new DataGridViewRow();
int index = 0;
row = dgv.SelectedRows[0];
index = dgv.SelectedRows[0].Index;
dgv.Rows.Remove(dgv.SelectedRows[0]);
dgv.Rows.Insert(index + 1, row);
dgv.ClearSelection();
dgv.Rows[index + 1].Selected = true;
// Up
DataGridViewRow row = new DataGridViewRow();
int index = 0;
row = dgv.SelectedRows[0];
index = dgv.SelectedRows[0].Index;
dgv.Rows.Remove(dgv.SelectedRows[0]);
dgv.Rows.Insert(index-1, row);
dgv.ClearSelection();
dgv.Rows[index - 1].Selected = true;
Where dgv is your DataGridView.
Try this:
private void buttonX9_Click(object sender, EventArgs e)//up
{
DataGridViewX grid = dataGridViewX1;
try
{
int totalRows = grid.Rows.Count;
int idx = grid.SelectedCells[0].OwningRow.Index;
if (idx == 0)
return;
int col = grid.SelectedCells[0].OwningColumn.Index;
DataGridViewRowCollection rows = grid.Rows;
DataGridViewRow row = rows[idx];
rows.Remove(row);
rows.Insert(idx - 1, row);
grid.ClearSelection();
grid.Rows[idx - 1].Cells[col].Selected = true;
}
catch { }
}