How can i read a dynamically created textbox in gridview

Question

5.00/5 (1 vote)

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I am adding few textbox dynamic in OnRowDataBound and when i try getting the value then i am getting null.

Here is my code

protected void Gridview1_RowDataBound(object sender, GridViewRowEventArgs e)
    {
        int columnValue = Convert.ToInt32(ViewState["CountColumnValue"].ToString());
        if (e.Row.RowType == DataControlRowType.DataRow)
        {
            for (int i = 1; i &lt;= columnValue; i++)
            {
                TextBox myTextBox = new TextBox();
                myTextBox.ID = "myTextBox" + (i).ToString();
                e.Row.Cells[i].Controls.Add(myTextBox);
            }
        }
    }


protected void btnEnter_Click(object sender, EventArgs e)
    {
        ViewState["CountColumnValue"] = txtNumber.Text;
        SetInitialRow();
    }

private void SetInitialRow()
    {
        DataTable dt = new DataTable();
        DataRow dr = null;
        dt.Columns.Add(new DataColumn("RowNumber", typeof(string)));

        int columnValue = Convert.ToInt32(ViewState["CountColumnValue"].ToString());

        for (int i = 0; i &lt; columnValue; i++)
        {
            dt.Columns.Add(new DataColumn("Column" + i, typeof(string)));
        }
        dr = dt.NewRow();
        dr["RowNumber"] = 1;

        for (int j = 0; j &lt; columnValue; j++)
        {
            dr["Column" + j] = string.Empty;
        }
        dt.Rows.Add(dr);

        //Store the DataTable in ViewState
        ViewState["CurrentTable"] = dt;

        Gridview1.DataSource = dt;
        Gridview1.DataBind();
    }

protected void btnResult_Click(object sender, EventArgs e)
    {
        for (int i = 0; i &lt; Gridview1.Rows[0].Cells.Count; i++)
        {
            GridViewRow grd = Gridview1.Rows[0];
            string str = (grd.Cells[1].FindControl("myTextBox1") as TextBox).Text;
        } 
    }

Posted 18-Jan-12 19:12pm

patel tauseef

Updated 18-Jan-12 19:14pm

anushripatil

v2

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Comments

anushripatil 19-Jan-12 1:16am

in btnResult_Click,i=1
string str = (grd.Cells[1].FindControl("myTextBox1") as TextBox).Text;
the id of your textbox should be like "myTextBox"+i

6 solutions

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Jephunneh Malazarte · Answer 1 · 2012-01-18T19:23:00

Solution 1

chang eyour fix index in cells to your country

old

(grd.Cells[1].FindControl("myTextBox1") as TextBox).Text;

new

(grd.Cells[i].FindControl("myTextBox" + i) as TextBox).Text;

changes
* Cells[1] to Cells[i]
* "myTextBox1" to "myTextBox" + i

Posted 18-Jan-12 19:23pm

Jephunneh Malazarte

patel tauseef · Answer 2 · 2012-01-19T17:39:00

Solution 2

Plz give me the answer as soon as.

Posted 19-Jan-12 17:39pm

patel tauseef

prot0col · Answer 3 · 2012-01-19T18:50:00

When your populate your grid you should add this condition in your rowdatabound event because 1st time rowdatabound runs with -ve index value.

SQL

if (e.Row.RowIndex != -1)
{
}

and then try doing this for getting the values from the textboxes:

C#

Foreach(Datarow dr in Gridview1.Rows)
{
    TextBox txtDummy = new TextBox;
    txtDummy = (TextBox)e.Row.FindControl("textBoxID goes here"));
    string dummy = txtDummy.text;
}

For ID see the source of the page and see whats the id its generating for your dynamic textboxes, it should be something like "Gridview1_ctl02_textboxname_textbox"

Manoj Kumar Choubey · Answer 4 · 2012-01-19T18:58:00

Solution 4

if (e.Row.RowType == DataControlRowType.DataRow)
{

TextBox  txtFCAlias = (TextBox )Gridview1.Rows[i].FindControl("myTextBox1");
OR
 string str = ((TextBox )Gridview1.Rows[i].FindControl("myTextBox1")).Text.trim();

OR
string str = ((TextBox )e.Rows.FindControl("myTextBox1")).Text.trim();
}

Posted 19-Jan-12 18:58pm

Manoj Kumar Choubey

Updated 19-Jan-12 19:04pm

v2

manognya kota · Answer 5 · 2012-01-19T19:20:00

hi,

One question:
Does the grid already have a column or the columns are created dynamically?

If columns are created dynamically..
You are binding the data table to the grid.Fine.On the rowbound you are adding a new textbox control to the grid.But where are you assigning the textbox.text ?

Am i missing something here?

Prashant Srivastava LKO · Answer 6 · 2012-01-19T19:47:00

try below code to show dynamic grid or static grid generated from staticId I have taken SrNo instead of any ID so don't confuse

#region values help to show gridview
private void SetInitialRow()
{
DataTable dt = new DataTable();
DataRow dr = null;
dt.Columns.Add(new DataColumn("SrNo", typeof(int)));
dt.Columns.Add(new DataColumn("Date", typeof(DateTime)));
dt.Columns.Add(new DataColumn("StartTime", typeof(string)));
dt.Columns.Add(new DataColumn("EndTime", typeof(string)));
dt.Columns.Add(new DataColumn("TotalTime", typeof(string)));
dt.Columns.Add(new DataColumn("ProjectName", typeof(string)));
dt.Columns.Add(new DataColumn("ModuleName", typeof(string)));
dt.Columns.Add(new DataColumn("EntityName", typeof(string)));
dt.Columns.Add(new DataColumn("WorkType", typeof(string)));
dt.Columns.Add(new DataColumn("Status", typeof(string)));
dt.Columns.Add(new DataColumn("Remarks", typeof(string)));
dr = dt.NewRow();
dr["SrNo"] = 1;
dr["Date"] = DateTime.Now;
dr["StartTime"] = string.Empty;
dr["EndTime"] = string.Empty;
dr["TotalTime"] = string.Empty;
dr["ProjectName"] = string.Empty;
dr["ModuleName"] = string.Empty;
dr["EntityName"] = string.Empty;
dr["WorkType"] = string.Empty;
dr["Status"] = string.Empty;
dr["Remarks"] = string.Empty;
dt.Rows.Add(dr);

ViewState["CurrentTable"] = dt;

grdDaily.DataSource = dt;
grdDaily.DataBind();
}
#endregion

#region virtualTable
private void virtualtable()
{
dtvt.Columns.Add(new DataColumn("SrNo", typeof(int)));
dtvt.Columns.Add(new DataColumn("Date", typeof(DateTime)));
dtvt.Columns.Add(new DataColumn("StartTime", typeof(string)));
dtvt.Columns.Add(new DataColumn("EndTime", typeof(string)));
dtvt.Columns.Add(new DataColumn("TotalTime", typeof(string)));
dtvt.Columns.Add(new DataColumn("ProjectName", typeof(string)));
dtvt.Columns.Add(new DataColumn("ModuleName", typeof(string)));
dtvt.Columns.Add(new DataColumn("EntityName", typeof(string)));
dtvt.Columns.Add(new DataColumn("WorkType", typeof(string)));
dtvt.Columns.Add(new DataColumn("Status", typeof(string)));
dtvt.Columns.Add(new DataColumn("Remarks", typeof(string)));
ViewState["dtFinal"] = dtvt;
ViewState["dtFinal123"] = dtvt;
}
#endregion