deleting rows from gridview

Question

0.00/5 (No votes)

See more:

Hello friends
i have a gridview like this

XML

<asp:gridview ID="Gridview1" runat="server" ShowFooter="true" AutoGenerateColumns="false">
           <Columns>
           <asp:BoundField DataField="RowNumber" HeaderText="Row Number" />
           <asp:TemplateField HeaderText="Header 1">
               <ItemTemplate>
                   <asp:TextBox ID="TextBox1" runat="server"></asp:TextBox>
               </ItemTemplate>
           </asp:TemplateField>
           <asp:TemplateField HeaderText="Header 2">
               <ItemTemplate>
                   <asp:TextBox ID="TextBox2" runat="server"></asp:TextBox>
               </ItemTemplate>
           </asp:TemplateField>
           <asp:TemplateField HeaderText="Header 3">
               <ItemTemplate>
                    <asp:TextBox ID="TextBox3" runat="server"></asp:TextBox>
               </ItemTemplate>
               <FooterStyle HorizontalAlign="Right" />
               <FooterTemplate>
                <asp:Button ID="ButtonAdd" runat="server" Text="Add New Row"
                       onclick="ButtonAdd_Click" />
               </FooterTemplate>
           </asp:TemplateField>
           </Columns>
       </asp:gridview>

i am adding row into gridview in following way
adding one row initially in it having textboxes

on button click calling this function

private void AddNewRowToGrid()
    {
        int rowIndex = 0;

        if (ViewState["CurrentTable"] != null)
        {
            DataTable dtCurrentTable = (DataTable)ViewState["CurrentTable"];
            DataRow drCurrentRow = null;
            if (dtCurrentTable.Rows.Count > 0)
            {
                for (int i = 1; i <= dtCurrentTable.Rows.Count; i++)
                {
                    //extract the TextBox values
                    TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("TextBox1");
                    TextBox box2 = (TextBox)Gridview1.Rows[rowIndex].Cells[2].FindControl("TextBox2");
                    TextBox box3 = (TextBox)Gridview1.Rows[rowIndex].Cells[3].FindControl("TextBox3");

                    drCurrentRow = dtCurrentTable.NewRow();
                    drCurrentRow["RowNumber"] = i + 1;

                    dtCurrentTable.Rows[i - 1]["Column1"] = box1.Text;
                    dtCurrentTable.Rows[i - 1]["Column2"] = box2.Text;
                    dtCurrentTable.Rows[i - 1]["Column3"] = box3.Text;

                    rowIndex++;
                }
                dtCurrentTable.Rows.Add(drCurrentRow);
                ViewState["CurrentTable"] = dtCurrentTable;

                Gridview1.DataSource = dtCurrentTable;
                Gridview1.DataBind();
            }
        }
        else
        {
            Response.Write("ViewState is null");
        }

        //Set Previous Data on Postbacks
        SetPreviousData();
    }


 private void SetPreviousData()
    {
        int rowIndex = 0;
        if (ViewState["CurrentTable"] != null)
        {
            DataTable dt = (DataTable)ViewState["CurrentTable"];
            if (dt.Rows.Count > 0)
            {
                for (int i = 0; i < dt.Rows.Count; i++)
                {
                    TextBox box1 = (TextBox)Gridview1.Rows[rowIndex].Cells[1].FindControl("TextBox1");
                    TextBox box2 = (TextBox)Gridview1.Rows[rowIndex].Cells[2].FindControl("TextBox2");
                    TextBox box3 = (TextBox)Gridview1.Rows[rowIndex].Cells[3].FindControl("TextBox3");

                    box1.Text = dt.Rows[i]["Column1"].ToString();
                    box2.Text = dt.Rows[i]["Column2"].ToString();
                    box3.Text = dt.Rows[i]["Column3"].ToString();

                    rowIndex++;
                }
            }
        }
    }

but i am not getting how to remove row from same

Posted 31-Jul-11 22:00pm

mayur csharp G

Updated 31-Jul-11 22:51pm

Toniyo Jackson

v2

Add a Solution

1 solution

Add a Solution

Add your solution here

Treat my content as plain text, not as HTML

Preview 0

…

Existing Members

Sign in to your account

...or Join us

Download, Vote, Comment, Publish.

Your Email
Password
Forgot your password?

Your Email
This email is in use. Do you need your password?
Optional Password

I have read and agree to the Terms of Service and Privacy Policy
Please subscribe me to the CodeProject newsletters

When answering a question please:

Read the question carefully.
Understand that English isn't everyone's first language so be lenient of bad spelling and grammar.
If a question is poorly phrased then either ask for clarification, ignore it, or edit the question and fix the problem. Insults are not welcome.
Don't tell someone to read the manual. Chances are they have and don't get it. Provide an answer or move on to the next question.

Let's work to help developers, not make them feel stupid.

This content, along with any associated source code and files, is licensed under The Code Project Open License (CPOL)

Herman<T>.Instance · Accepted Answer · 2011-07-31T22:47:00

add a templatefield that holds a delete button.
In the onclick event you have to find the row in which the button was clicked.

protected void btnDelete_OnClick(object sender, EventArgs e)
{
Button btn = (Button)sender;
GridViewRow gridRow = (GridViewRow)btn.NamingContainer;

//you know have the good gridviewrow in which the button was clicked.
// Then you can do
string MyKeyValue = gridRow.Cells[0].Text;

//with the MyKeyValue you have a value which might be the unique key on which you 
//can delete the row


}