CODEWITHSUNDEEP
c#gridview
Hemant Sonar
Hemant Sonar

Reputation: 101

How to get column name and create string variable dynamically?

Through Edit link button I'm able to edit record using code below . As you can see here number of columns are 4 , for fixed column number this code is fine but In my condition Column numbers are not fixed ,they may 4 or may be 5 for next insert. How can I get column names and create that number of string variable, so that I can assign string values to particular field ?

  protected void OnUpdate(object sender, EventArgs e)
{
    GridViewRow row = (sender as LinkButton).NamingContainer as GridViewRow;

    string a = (row.Cells[3].Controls[0] as TextBox).Text;
    string b = (row.Cells[4].Controls[0] as TextBox).Text;
    string c = (row.Cells[5].Controls[0] as TextBox).Text;
    string d = (row.Cells[6].Controls[0] as TextBox).Text;

    DataTable dt = ViewState["dt"] as DataTable;

    dt.Rows[row.RowIndex]["Column0"] = a;
    dt.Rows[row.RowIndex]["Column1"] = b;
    dt.Rows[row.RowIndex]["Column2"] = c;
    dt.Rows[row.RowIndex]["Column3"] = d;

    ViewState["dt"] = dt;
    GridView1.EditIndex = -1;
    this.BindGrid();
    btnGetSelected.Visible = true;

}

Upvotes: 1

Views: 430

Answers (2)

Hemant Sonar
Hemant Sonar

Reputation: 101

This worked for me.

 protected void OnUpdate(object sender, EventArgs e)
{
    GridViewRow row = (sender as LinkButton).NamingContainer as GridViewRow;
    DataTable dt = ViewState["dt"] as DataTable;
    int j=0;
    for (int i = 3; i < row.Cells.Count; i++)
    {
          string a = (row.Cells[i].Controls[0] as TextBox).Text;
          dt.Rows[row.RowIndex][j] = a;
          j++;
    }
    ViewState["dt"] = dt;
    GridView1.EditIndex = -1;
    this.BindGrid();
    btnGetSelected.Visible = true;
}

Upvotes: 1

Miguel Sanchez
Miguel Sanchez

Reputation: 434

Do you mean you need the columns names of the GridView?

You could use either of these 

gv.HeaderRow.Cells[i].Text

gv.Rows[0].Cells[i].Text

Reference

It you want column names of DataTable use

string[] columnNames = dt.Columns.Cast<DataColumn>()
                                 .Select(x => x.ColumnName)
                                 .ToArray();

Upvotes: 1

Related Questions