I have two tables in SQL. I need to insert the data from one table to another.I have done it successfully, but the problem is I need to extra add one column value from text box. I will show my code
protected void Button2_Click1(object sender, EventArgs e)
{
String str1 = "insert into table2(Code,Qty,UPrice,Total) select Code,Qty,UPrice,Total from table1 ;";
SqlCommand cmd = new SqlCommand(str1, con);
con.Open();
SqlDataAdapter da1 = new SqlDataAdapter();
cmd.Parameters.AddWithValue("#Num", TextBox1.Text);
da1.SelectCommand = cmd;
DataSet ds1 = new DataSet();
da1.Fill(ds1, "Code");
GridView1.DataSource = ds1;
con.Close();
}
Here I need to add Num to my table2 that is not in the table1. So I need to add it from textbox1. How can I add that Num value to the all data from textbox.
protected void Button2_Click1(object sender, EventArgs e)
{
String str1 = "insert into table2(Code,Qty,UPrice,Total,Num) select Code,Qty,UPrice,Total,'"+TextBox1.Text+"' from table1 ;";
SqlCommand cmd = new SqlCommand(str1, con);
con.Open();
SqlDataAdapter da1 = new SqlDataAdapter();
da1.SelectCommand = cmd;
DataSet ds1 = new DataSet();
da1.Fill(ds1);
GridView1.DataSource = ds1;
con.Close();
}
Just set your dynamic value in a temporary variable.
String temp = TextBox1.Text;
Now use this variable with your insert query
String str1 = "insert into table2(Code,Qty,UPrice,Total,Num)
select Code,Qty,UPrice,Total,'"+temp+"' from table1 ;";
I guess Num is your column name, you can modify your query as
insert into table2(Code,Qty,UPrice,Total, Num)
select Code,Qty,UPrice,Total, textbox1.Text from table1 ;
Related
// fill from database
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string readnamesquery = "select cwFullTitle from tbCowWorkers";
cn.Open();
SqlCommand cmd = new SqlCommand(readnamesquery, cn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
ddlUsers.DataSource = dt;
ddlUsers.DataValueField = "cwFullTitle";
ddlUsers.DataTextField = "cwFullTitle";
ddlUsers.DataBind();
cn.Close();
// insert selected value to database
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string registerQuery = "insert into Depot (dTdeliveryName) values (N'"+ddlUsers.SelectedValue.ToString()+"')";
SqlCommand cmd = new SqlCommand(registerQuery, cn);
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
I fill a Dropdownlist from SQL Server, then send selected item to another table in SQL Server; but it send first item of Dropdownlist as selected item.
Selected item didn't change and returns default value.
The reason is obvious, you are filling the dropdown list and then inserting the record, so it is bound to take the first item of the DropdownList.
I would suggest you separate the code of filling the dropdown list in another function and do the insertion only on selected_index change (ddl_SelectedIndexChanged) of DropDownList. In this ddl_SelectedIndexChanged function just check the selected value of the drop-down list and insert it to your target table (please remember to not invoke the call the function to load/Fill Dropdown List which you are currently doing in the shared code snippet).
SomeThing Like this
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string readnamesquery = "select cwFullTitle from tbCowWorkers";
cn.Open();
SqlCommand cmd = new SqlCommand(readnamesquery, cn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
ddlUsers.DataSource = dt;
ddlUsers.DataValueField = "cwFullTitle";
ddlUsers.DataTextField = "cwFullTitle";
ddlUsers.DataBind();
cn.Close();
}
}
protected void ddlUser_SelectedIndexChanged(object sender, EventArgs e)
{
// insert selected value to database
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string registerQuery = "insert into Depot (dTdeliveryName) values
(N'"+ddlUsers.SelectedValue.ToString()+"')";
SqlCommand cmd = new SqlCommand(registerQuery, cn);
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
}
Hope this Helps!
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
//Loading Dropdown by calling This.
LoadDdl();
}
}
//Load Dropdown From Database.
protected void LoadDdl(){
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string readnamesquery = "select cwFullTitle from tbCowWorkers";
cn.Open();
SqlCommand cmd = new SqlCommand(readnamesquery, cn);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataTable dt = new DataTable();
da.Fill(dt);
ddlUsers.DataSource = dt;
ddlUsers.DataValueField = "cwFullTitle";
ddlUsers.DataTextField = "cwFullTitle";
ddlUsers.DataBind();
cn.Close();
}
//Inserting Item to another table by selected index change.
protected void ddlUser_SelectedIndexChanged(object sender, EventArgs e)
{
//Checking If it's not the default value.
if(ddlUser.SelectedIndex != -1){
// insert selected value to database
SqlConnection cn = new SqlConnection(GlobalData.connectionstring);
string registerQuery = "insert into Depot (dTdeliveryName) values
(N'"+ddlUsers.SelectedValue.ToString()+"')";
SqlCommand cmd = new SqlCommand(registerQuery, cn);
cn.Open();
cmd.ExecuteNonQuery();
cn.Close();
}
}
I have a dropdownlist and a gridview.. Dropdown list contains the list of the tables I have in my database. What I want is, when I select a particular table name from the dropdownlist, I want all the columns and data inside that particular table display inside the gridview.
This is my code...
Code for displaying the list of tables inside the dropdown is success.. But to bind the columns and data inside the gridview is not success..
Please Help me...
protected void Page_Load(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection("Data Source=.\\SQLEXPRESS;Initial Catalog=Employee;Integrated Security=True"))
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT table_name FROM INFORMATION_SCHEMA.TABLES", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
DropDownList1.DataSource = ds;
DropDownList1.DataTextField = "table_name";
DropDownList1.DataValueField = "table_name";
DropDownList1.DataBind();
con.Close();
}
}
protected void DropDownList1_SelectedIndexChanged(object sender, EventArgs e)
{
using (SqlConnection con = new SqlConnection("Data Source=.\\SQLEXPRESS;Initial Catalog=Employee;Integrated Security=True"))
{
con.Open();
SqlCommand cmd = new SqlCommand("SELECT * FROM INFORMATION_SCHEMA.columns where table_name='+ DropDownList1.selecteditem.text +'", con);
SqlDataAdapter da = new SqlDataAdapter(cmd);
DataSet ds = new DataSet();
da.Fill(ds);
GridView1.DataSource = ds;
//+DropDownList1.selecteditem.text +
GridView1.DataBind();
con.Close();
}
}
This is a bad idea on several levels. First you are wide open to SQL injection. Second, you are giving everyone full view access to every column and row of every table.
But the reason you are not getting data is because the select string does not make sense. It should look like this
"SELECT * FROM INFORMATION_SCHEMA.columns where table_name='" + DropDownList1.SelectedValue + "'"
But this is how a proper sql connection should look like.
//create a new datatable
DataTable dt = new DataTable();
//create the string that hold the query including token
string query = "SELECT * FROM INFORMATION_SCHEMA.columns where table_name = #TableName";
//create a new database connection
using (SqlConnection connection = new SqlConnection(ConnectionString))
using (SqlCommand command = new SqlCommand(query, connection))
{
command.CommandType = CommandType.Text;
//replace the token with the correct value
command.Parameters.Add("#TableName", SqlDbType.VarChar).Value = DropDownList1.SelectedValue;
//open the connection
connection.Open();
//load the data of the select into the datatable
dt.Load(command.ExecuteReader());
//bind the datatable to the gridview
GridView1.DataSource = dt;
GridView1.DataBind();
//but you can also skip the datatable and bind directly to the gridview
GridView1.DataSource = command.ExecuteReader();
GridView1.DataBind();
}
string ddorder = DropDownList2.SelectedValue; // column
string ddtype = DropDownList3.SelectedValue; //asc or desc
String str1 = "Select * from table1 order by("+ddorder+" "+ddtype+")";
//there is an error beacuse of ddtype, what am I doing wrong?
SqlCommand cmd = new SqlCommand(str1, con);
con.Open();
cmd.ExecuteNonQuery();
SqlDataAdapter da1 = new SqlDataAdapter();
da1.SelectCommand = cmd;
DataSet ds1 = new DataSet();
da1.Fill(ds1, DropDownList2.SelectedValue);
GridView2.DataSource = ds1;
GridView2.DataBind();
con.Close();
As far as I can see, you don't need to use ( and ) in order by clause. It's syntax doesn't have any usage for ( or ).
For example;
order by id desc
will work but
order by (id desc)
won't work.
By the way, use using statement to dispose your SqlConnection, SqlCommand and SqlDataAdapter automatically instead of calling Close method manually.
Also you don't need cmd.ExecuteNonQuery(); part for a SELECT statement. It is unnecessary since it's just execute your select query. It doesn't do or return something.
A few things more;
Change your table1 to something meaningful.
Don't use SELECT *. It's quite bad.
Use Dynamic Query:
Change Here:
string ddorder = DropDownList2.SelectedValue; // column
string ddtype = DropDownList3.SelectedValue; //asc or desc
String str1 = "exec(Select * from table1 order by "+ddorder+" "+ddtype+")";
and
SqlCommand cmd = new SqlCommand(str1, con);
con.Open();
cmd.ExecuteNonQuery();
SqlDataAdapter da1 = new SqlDataAdapter();
da1.SelectCommand = cmd;
DataSet ds1 = new DataSet();
da1.Fill(ds1);
GridView2.DataSource = ds1;
GridView2.DataBind();
con.Close();
Remove the parenthesis in the "order by" clause:
String str1 = "Select * from table1 order by "+ddorder+" "+ddtype;
i have to search data from the text box in datagrid using c#
My code is
private void button_Search_Click(object sender, EventArgs e)
{
sqlcon.Open();
//DataSet ds15 = new DataSet();
DataTable dt= new DataTable();
SqlDataAdapter adpt = new SqlDataAdapter("Select ColumName from TableName where Field like '%{0}%'", comboBox_Search.Text);
adpt.Fill(dt);//datatable to catch the fields from the database
dataGridView1.DataSource = dt;
Getting error Arguement exception was unhandled
I want to search through combo box
there is no constructor match your parameters on SqlDataAdapter
SqlDataAdapter adpt = new SqlDataAdapter(string.Format("Select ColumName from TableName where Field like '%{0}%'",
comboBox_Search.Text), sqlcon);
Query every time to the database is not a preferable approach. Instead take a BindingSource object and fill the source once. Then use BindingSource.Filter property to get relevant result set and bind the result set to grid.
Have a look at this and and this link.
Also, to fix your issue you can try like this:
....
sqlcon.Open();
string query = string.Format("Select ColumName from TableName where Field like '%{0}%'", comboBox_Search.Text);
SqlCommand cm = new SqlCommand(query, sqlcon);
SqlDataAdapter adpt = new SqlDataAdapter(cmd);
adpt.Fill(dt);//datatable to catch the fields from the database
dataGridView1.DataSource = dt;
....
How does the SqlDataAdapter know where to get the result from?
You are not initializing the constructor for your SqlDataAdapter properly. The first argument is the full select statement and the second argument is your connection string.
SqlDataAdapter adpt = new SqlDataAdapter(string.Format("Select ColumName from atm_status where Table like '%{0}%'", comboBox_Search.Text), sqlcon);
private void txt_Searchque_TextChanged(object sender, EventArgs e)
{
string connector_string = "datasource = localhost;port=3306;username=root;password=;";
MySqlConnection sqlcon = new MySqlConnection(connector_string);
sqlcon.Open();
string query = string.Format("Select * from oep.quiz where que like '%{0}%'", txt_Searchque.Text);
MySqlCommand cmd = new MySqlCommand(query, sqlcon);
MySqlDataAdapter adpt = new MySqlDataAdapter(cmd);
DataTable dt = new DataTable();
adpt.Fill(dt);
dataGridView1.DataSource = dt;
}
I have two tables in a SQL Server database, product and innvoice.
I am fetching selected data from table product and showing them in datagridview.
Now I want to store data from datagridview to table innvoice. This all operation takes on one button click.
Here is my code:
private void button5_Click_2(object sender, EventArgs e) //add produt
{
SqlConnection con = new SqlConnection(#"Persist Security Info=False;User ID=usait;password=123;Initial Catalog=givenget;Data Source=RXN-PC\ROSHAAN");
con.Open();
SqlDataAdapter da = new SqlDataAdapter("SELECT product.p_name,product.p_category, product.sale_price FROM product where p_code='" + textBox16.Text + "'", con);
DataTable dt = new DataTable();
da.Fill(dt);
dataGridView3.DataSource = dt;
// here I want to insert values from datagridview3 to table innvoice.
}
Please make a note.Using direct SQL query is not a good practise.
Hope this will help you.
private void button5_Click_2(object sender, EventArgs e) //add produt
{
SqlConnection con = new SqlConnection(#"Persist Security Info=False;User ID=usait;password=123;Initial Catalog=givenget;Data Source=RXN-PC\ROSHAAN");
Dataset ds=new Dataset();
con.Open();
SqlDataAdapter da = new SqlDataAdapter("SELECT product.p_name,product.p_category, product.sale_price FROM product where p_code='" + textBox16.Text + "'", con);
da.Fill(ds);
dataGridView3.DataSource = ds;
//Code to insert values into Invoice
for( i = 0; i < ds.Tables[0].Rows.Count; i++)
{
sqlcommand cmd=new sqlcommand();
cmd=new sqlcommand("insert into invoice(pname,pcategory,psaleprice) values('"+ds.Tables[0].Rows[i]["product.p_name"].ToString()+"','"+ds.Tables[0].Rows[i]["product.p_category"].ToString()+"','"+ds.Tables[0].Rows[i]["product.sale_price"].ToString()+"')",con);
cmd.executeNonquery();
}
con.close();
}