It is a Windows Form Application in C#.
I am using DataRepeater Control in which I am displaying three columns:
Text Label,Link Label,Link Label
Following is the screenshot:
Following is the code which populates DataRepeater:
private void Get_StaffLogins_RequestList()
{
mySqlConnection = DBAccess.getConnection();
mySqlConnection.Open();
DataTable dt = sysadmin.getStaffLoginsRequests(mySqlConnection);
BindingSource bSource = new BindingSource();
staff_id.DataBindings.Add("Text", bSource, "staff_id");
//accessLink.DataBindings.Add("Value", bSource, "staff_id");
//denyLink.DataBindings.Add("Value", bSource, "staff_id");
if (dt.Rows.Count > 0)
{
bSource.DataSource = dt;
r_msgs.DataSource = bSource;
}
else
{
r_msgs.DataSource = String.Empty;
notify.Text = "There are no Pending requests for staff logins!";
}
mySqlConnection.Close();
}
private void accessLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
//Access Link Clicked
}
private void denyLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
//Deny Link Clicked
}
Now what I need is that when User clicks on Access or Deny Link I somehow get corresponding StaffID so that I can mark that particular staffID Access/Denied in Database.
How can I attribute each Row Link Labels with unique staff ids?
thanks in advance!
I resolved this issue by getting Current Item Index of DataRepeater:
private void accessLink_LinkClicked(object sender, LinkLabelLinkClickedEventArgs e)
{
//Access Link Clicked
int RequestNumber = r_msgs.CurrentItemIndex;
MessageBox.Show(RequestNumber.toString()+1);
//Remaining Code
}
This code Prints the Row number of the Access Link Label, and that's what I wanted!
Related
I am working on a Windows application where I get an input from a TextBox and add it to the DataGridView when user clicks on a Button (Add).
My problem is that when I add the text for the first time, it works fine and its added to the grid.
When I add new text, it's not added to the DataGridView. Once the Form is closed and reopened with the same object then I am able to see it.
Code:
private void btnAddInput_Click(object sender, EventArgs e)
{
if (Data == null)
Data = new List<Inputs>();
if (!string.IsNullOrWhiteSpace(txtInput.Text))
{
Data.Insert(Data.Count, new Inputs()
{
Name = txtInput.Text,
Value = string.Empty
});
}
else
{
MessageBox.Show("Please enter parameter value", "Information", MessageBoxButtons.OK, MessageBoxIcon.Information);
}
txtInput.Text = "";
gridViewInputs.DataSource = Data;
}
I am not sure what is causing the record not to be added to grid on second add button click.
You could set the DataGridView.DataSource to null before setting a new one.
This would cause the DataGridView to refresh its content with the new data in the source List<Inputs>:
the underlying DataGridViewDataConnection is reset only when the DataSource reference is different from the current or is set to null.
Note that when you reset the DataSource, the RowsRemoved event is raised multiple times (once for each row removed).
I suggest to change the List to a BindingList, because any change to the List will be reflected automatically and because it will allow to remove rows from the DataGridView if/when required: using a List<T> as DataSource will not allow to remove a row.
BindingList<Inputs> InputData = new BindingList<Inputs>();
You can always set the AllowUserToDeleteRows and AllowUserToAddRows properties to false if you don't want your Users to tamper with the grid content.
For example:
public class Inputs
{
public string Name { get; set; }
public string Value { get; set; }
}
internal BindingList<Inputs> InputData = new BindingList<Inputs>();
private void Form1_Load(object sender, EventArgs e)
{
dataGridView1.DataSource = InputData;
}
private void btnAddInput_Click(object sender, EventArgs e)
{
string textValue = txtInput.Text.Trim();
if (!string.IsNullOrEmpty(textValue))
{
InputData.Add(new Inputs() {
Name = textValue,
Value = "[Whatever this is]"
});
txtInput.Text = "";
}
else
{
MessageBox.Show("Not a valid value");
}
}
If you want to keep using a List<T>, add the code required to reset the DataGridView.DataSource:
private void btnAddInput_Click(object sender, EventArgs e)
{
if (!string.IsNullOrEmpty(textValue))
{
//(...)
dataGridView1.DataSource = null;
dataGridView1.DataSource = InputData;
txtInput.Text = "";
}
//(...)
i'm requesting data from database through a D A L file. I want to data bind and show a drop down menu's single option selected against that of the database. How should i do it?
here's my code:
Pages pg = new Pages();
public static string pgId;
protected void Page_Load(object sender, EventArgs e)
{
if(!IsPostBack)
{
Bind_ddlParentPage();
Bind_ddlPageModel();
Bind_ddlArticleModel();
if (!IsPostBack)
{
pgId = Request.QueryString["pageId"];
if (pgId != null)
{
GetData();
}
}
}
}
public void GetData()
{
ddlParentPage.SelectedValue = pg.ParentPage;
//Bind_ddlParentPage();---dropdownlist which is causing problem.
//I want to set this data:: pg.ParentPage to dropdownlist in another
page
ddlPageModel.SelectedValue = pg.PageModel;
//Bind_ddlPageModel();
//All the three drop downs have same table for the source,
'Pages' table and this page is the same page for adding new entry to
Pages table.
ddlArticleModel.SelectedValue = pg.ArticleModel;
//Bind_ddlArticleModel();
}
First, you have a duplication in your conditional statement:
if(!IsPostBack) {
...
if(!IsPostBack) {
...
}
}
Second, you need to bind the data to the dropdown, then set the selected value. Refer: this post
protected void Page_Load(object sender, EventArgs e)
{
if (!Page.IsPostBack)
{
DropDownList1.DataBind(); // get the data into the list you can set it
DropDownList1.Items.FindByValue("SOMECREDITPROBLEMS").Selected = true;
}
}
I am attempting to write code that will display data in a datagridview based off of the size of car selected in a combo box. When this code initially runs, it defaults to economy sized, and displays the correct information in the datagridview. However, when a different size is selected in the combo box, the text boxes update correctly while the datagridview remains the same. What can I do to make it update every time the combo box is changed? I thought the code in "private void cboSize_selectionChangeCommitted()" would accomplish this, but there was no change in the output.
namespace carForm
{
public partial class Form1 : Form
{
_Cars_1_DataSet cDataSet;
BindingSource sizeBindingSource;
BindingSource vehicleBindingSource;
CarsDataClass clsCarsData;
Boolean gridInitialized;
public Form1()
{
InitializeComponent();
}
private void exitToolStripMenuItem_Click(object sender, EventArgs e)
{
this.Close();
}
private void Form1_Load(object sender, EventArgs e)
{
// TODO: This line of code loads data into the '_Cars_1_DataSet.Reservations' table. You can move, or remove it, as needed.
this.reservationsTableAdapter.Fill(this._Cars_1_DataSet.Reservations);
// TODO: This line of code loads data into the '_Cars_1_DataSet.Vehicle' table. You can move, or remove it, as needed.
this.vehicleTableAdapter.Fill(this._Cars_1_DataSet.Vehicle);
// TODO: This line of code loads data into the '_Cars_1_DataSet.CarSize' table. You can move, or remove it, as needed.
this.carSizeTableAdapter.Fill(this._Cars_1_DataSet.CarSize);
clsCarsData = new CarsDataClass();
cDataSet = clsCarsData.GetDataSet();
//Binding source sizes
sizeBindingSource = new BindingSource();
sizeBindingSource.DataSource = cDataSet;
sizeBindingSource.DataMember = "CarSize";
//Binding source vehicles
vehicleBindingSource = new BindingSource();
vehicleBindingSource.DataSource = cDataSet;
vehicleBindingSource.DataMember = "Vehicle";
//Combo box
cboSize.DataSource = sizeBindingSource;
cboSize.DisplayMember = "Size";
cboSize.ValueMember = "SizeCode";
//bind other controls
txtDaily.DataBindings.Add("text", sizeBindingSource, "DailyRate");
txtMileage.DataBindings.Add("text", sizeBindingSource, "MileageRate");
//execute combo box
cboSize_SelectionChangeCommitted(cboSize, e);
}
private void cboSize_SelectionChangeCommitted(object sender, EventArgs e)
{
string carSelected;
carSelected = Convert.ToString(cboSize.SelectedValue);
if (!gridInitialized)
{
dgvVehicles.DataSource = vehicleBindingSource;
gridInitialized = true;
ChangeGridColumns();
}
vehicleBindingSource.Filter = "CarSize = '" + carSelected + "'";
}
private void ChangeGridColumns()
{
//Change column headers
//dgvVehicles.Columns["Inv_ID"].Visible = false;
}
}
}
Try using SelectedIndexChanged event from the events menu after clicking on the combobox in the design view.
This should populate in your code:
private void comboBox1_SelectedIndexChanged(object sender, EventArgs e)
{
Console.WriteLine("test!");
}
In there you can put this logic from your code:
string carSelected;
carSelected = Convert.ToString(cboSize.SelectedValue);
if (!gridInitialized)
{
dgvVehicles.DataSource = vehicleBindingSource;
gridInitialized = true;
ChangeGridColumns();
}
vehicleBindingSource.Filter = "CarSize = '" + carSelected + "'";
Use SelectedIndexChanged instead of SelectionChangeCommitted.
I have 1 gridview look like this:
Anytime user click on Bookmark button, I want to send the data in ProgramID column of that row to the List and pass it to second gridview in another page.But my second gridview doesn't display any data. What am I doing wrong?
This is my code for Bookmark button:
protected void btnSelect_Click(object sender, EventArgs e)
{
Button b = (Button)sender;
GridViewRow row = (GridViewRow)b.NamingContainer;
var ProgramID = row.FindControl("lblProgramID") as Label;
string stringProgramID = ProgramID.Text;
List<string> bookmarkPrograms = new List<string>();
bookmarkPrograms.Add(stringProgramID);
Session["BookmarkProgram"] = bookmarkPrograms;
}
And here is the code in Bookmark page:
protected void Page_Load(object sender, EventArgs e)
{
List<string> bookMarkPrograms = (List<string>)Session["BookMarkPrograms"];
GridView1.DataSource = bookMarkPrograms;
GridView1.DataBind();
}
In my Windows application I had a job code combobox and when user selects a jobcode from the combobox it will get the corresponding data from database and will display it in a datagridview below the combobox. All is fine and I am able to load data corresponding to selected jobcode.
I used the this code
public void loadcompljobcodecombobox()
{
completedcobcodeadapterTableAdapter cmpltjbcd = new completedcobcodeadapterTableAdapter();
cmpltjbcd.Connection = new OleDbConnection(Program.ConnStr);
DataTable dt= cmpltjbcd.GetData(int.Parse(cmbcutcode.SelectedValue.ToString()));
if (dt.Rows.Count > 0)
{
cmbjobcode.ValueMember = "jobpk";
cmbjobcode.DisplayMember = "jobcode";
txtcompanyname.Text = "companyname";
cmbjobcode.DataSource = dt;
}
else
{
MessageBox.Show("NO JobCode to be invoiced");
}
}
private void cmbjobcode_SelectedValueChanged(object sender, EventArgs e)
{
tbltoinvoicedtableTableAdapter tbltoinvce = new tbltoinvoicedtableTableAdapter();
tbltoinvce.Connection = new OleDbConnection(Program.ConnStr);
if (cmbjobcode.SelectedValue != null)
{
DataTable dt = tbltoinvce.GetDataBy(int.Parse(cmbjobcode.SelectedValue.ToString()));
dataGridView1.DataSource = dt;
}
}
Now my requirement is user must be able to select more than one jobcode details at a time for invoicing i.e. if he selects one value from jobcode corresponding data should be added in datagridview and when he select another jobcode its corresponding data should be added as next row in the Datagridview.
I had tried very much and find no way can anyone suggest an idea or example
If I understand you correctly, I would try something like this. This isn't tested but it's an idea.
At Form Level:
private BindingList<DataRow> jobList;
Then to add to your current code...
private void cmbjobcode_SelectedValueChanged(object sender, EventArgs e)
{
tbltoinvoicedtableTableAdapter tbltoinvce = new tbltoinvoicedtableTableAdapter();
tbltoinvce.Connection = new OleDbConnection(Program.ConnStr);
if (cmbjobcode.SelectedValue != null)
{
DataRow job = tbltoinvce.GetDataBy(int.Parse(cmbjobcode.SelectedValue.ToString())).Rows[0];
if (jobList == null)
{
jobList = new BindingList<DataRow>();
jobList.Add(job);
dataGridView1.DataSource = jobList;
}
else
{
if (!jobList.Contains(job));
jobList.Add(job);
}
}
}
**Edit: This is assuming your job data contains only one row of data since your question asked for how to add "a row".