How to fire the button event in gridview created dynamically

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Hi Geeks,

I've a gridview with webcontrols(Textbox,Button in footer). Dynamically I need to create any number of gridviews by the following code. But only 1 gridview is created. And also the problem is the button event is not firing

C#

public void btn_Click(object sender, EventArgs e)
    {
        GridView gv = new GridView();
        gv.ID = sender.ToString();
    }

inside the class. How to fire this event? This is the code I used to create gridview.

C#

protected void btnAddGrid_Click(object sender,EventArgs e)
{
    int count = Convert.ToInt32(Session["count"]);
    DataTable dt=(DataTable)ViewState["CurrentTableforCommonDetails"];
    GridView gv = new GridView();
    gv.ID = "GridView" + count;
    gv.AutoGenerateColumns = false;
    if (dt.Rows.Count > 0)
    {
        for (int i = 0; i < dt.Columns.Count; i++)
        {
            TemplateField tmpfld = new TemplateField();
            tmpfld.HeaderText = dt.Columns[i].ColumnName.ToString();
            tmpfld.ItemTemplate =new DynamicTemplateField();
            if (i == 0)
            { 
                tmpfld.FooterTemplate = new DynamicTemplateField1();
            }
            gv.Columns.Add(tmpfld);
        }
    }
    gv.Visible = true;
    gv.ShowHeaderWhenEmpty = true;
    gv.ShowFooter = true;
    placegridview.Controls.Add(gv);
    gv.DataSource = dt;
    gv.DataBind();

    count++;
    Session["count"] = count;
}

public class DynamicTemplateField : ITemplate
{
    public void InstantiateIn(System.Web.UI.Control container)
    {
        //define the control to be added , i take text box as your need
        System.Web.UI.WebControls.TextBox txt1 = new System.Web.UI.WebControls.TextBox();
        txt1.ID = "txt1";
        txt1.Width = 50;
        container.Controls.Add(txt1);
    }
}

public class DynamicTemplateField1 : ITemplate
{
    public void InstantiateIn(System.Web.UI.Control container)
    {
        //define the control to be added , i take text box as your need
        System.Web.UI.WebControls.Button btn = new System.Web.UI.WebControls.Button();
        btn.ID = "btn1";
        btn.Click += new EventHandler(btn_Click);
        btn.UseSubmitBehavior = false;
        btn.Text = "Add New";
        container.Controls.Add(btn);
    }
    public void btn_Click(object sender, EventArgs e)
    {
        GridView gv = new GridView();
        gv.ID = sender.ToString();
    }

}

Posted 29-Jul-14 19:55pm

Sriram Ramachandran

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Comments

Sergey Alexandrovich Kryukov 30-Jul-14 2:41am

Why would you ever need to fire an event? You should only handle them. The event is fired by the user pressing on your button.
—SA

Sriram Ramachandran 30-Jul-14 2:44am

Yeah I've handled the code too. But that function is not called when I click the button. Thats my problem..

2 solutions

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prasanna.raj · Answer 1 · 2014-07-29T20:24:00

Solution 1

Try this article

Dynamically adding and deleting rows from ASP.NET GridView[^]

Posted 29-Jul-14 20:24pm

prasanna.raj

Comments

Sriram Ramachandran 30-Jul-14 2:41am

I know this already. This doesn't solve my problem...

prasanna.raj 30-Jul-14 3:34am

oh i ll try and tell u..

Pikoh · Answer 2 · 2014-07-29T20:59:00

Instead of using the button click event,try using CellContentClick

C#

this.dataGrid1.CellContentClick += new DataGridViewCellEventHandler(dataGrid1_CellContentClick);

And then in the event handler,ask if it's your button cell

C#

void dataGrid1_CellContentClick(object sender, DataGridViewCellEventArgs e)
        {
            
            if (e.ColumnIndex == this.dataGrid1.Columns["ButtonColumn"].Index )
            {
                //Do your staff
            }
        }

EDIT: That was for winforms. In asp.net refer this http://msdn.microsoft.com/en-us/library/vstudio/bb907626(v=vs.90).aspx[^] Hope it helps.