For your understanding purpose i have shown here 3 ways to delete the GridView Row.
Namespace
using System.Data;
1) Using OnRowDeleting
HTML
Delete Row using OnRowDeleting
<asp:GridView ID="GridView2" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
OnRowDeleting="GridView1_RowDeleting" runat="server" AutoGenerateColumns="false"
AutoGenerateDeleteButton="true">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
<asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
<asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
</Columns>
</asp:GridView>
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
new DataColumn("Name", typeof(string)),
new DataColumn("Country",typeof(string)) });
dt.Rows.Add(1, "John Hammond", "United States");
dt.Rows.Add(2, "Mudassar Khan", "India");
dt.Rows.Add(3, "Suzanne Mathews", "France");
dt.Rows.Add(4, "Robert Schidner", "Russia");
this.GridView2.DataSource = dt;
this.GridView2.DataBind();
ViewState["UsingRowDeleting"] = dt;
}
}
protected void GridView1_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
int index = e.RowIndex;
DataTable dt = (DataTable)ViewState["UsingRowDeleting"];
dt.Rows.RemoveAt(index);
this.GridView2.DataSource = dt;
this.GridView2.DataBind();
}
2) Using LinkButton OnClick Event
HTML
Delete Row using LinkButton OnClick event
<asp:GridView ID="GridView1" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
runat="server" AutoGenerateColumns="false">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
<asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
<asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
<asp:TemplateField>
<ItemTemplate>
<asp:LinkButton ID="LinkButton1" Text="Delete" OnClick="Delete" runat="server" />
</ItemTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
new DataColumn("Name", typeof(string)),
new DataColumn("Country",typeof(string)) });
dt.Rows.Add(1, "John Hammond", "United States");
dt.Rows.Add(2, "Mudassar Khan", "India");
dt.Rows.Add(3, "Suzanne Mathews", "France");
dt.Rows.Add(4, "Robert Schidner", "Russia");
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
ViewState["UsingRowDeleting"] = dt;
ViewState["UsingLinkButtonOnClick"] = dt;
ViewState["UsingSelectedRow"] = dt;
}
}
protected void Delete(object sender, EventArgs e)
{
int index = Convert.ToInt32(((sender as LinkButton).NamingContainer as GridViewRow).RowIndex);
DataTable dt = (DataTable)ViewState["UsingLinkButtonOnClick"];
dt.Rows.RemoveAt(index);
this.GridView1.DataSource = dt;
this.GridView1.DataBind();
}
3) Using OnSelectedIndexChanged
HTML
Delete Row using OnSelectedIndexChanged
<asp:GridView ID="GridView3" HeaderStyle-BackColor="#3AC0F2" HeaderStyle-ForeColor="White"
runat="server" AutoGenerateSelectButton="true" AutoGenerateColumns="false" OnSelectedIndexChanged="GridView3_OnSelectedIndexChanged">
<Columns>
<asp:BoundField DataField="Id" HeaderText="Id" ItemStyle-Width="30" />
<asp:BoundField DataField="Name" HeaderText="Name" ItemStyle-Width="150" />
<asp:BoundField DataField="Country" HeaderText="Country" ItemStyle-Width="150" />
</Columns>
</asp:GridView>
C#
protected void Page_Load(object sender, EventArgs e)
{
if (!this.IsPostBack)
{
DataTable dt = new DataTable();
dt.Columns.AddRange(new DataColumn[3] { new DataColumn("Id", typeof(int)),
new DataColumn("Name", typeof(string)),
new DataColumn("Country",typeof(string)) });
dt.Rows.Add(1, "John Hammond", "United States");
dt.Rows.Add(2, "Mudassar Khan", "India");
dt.Rows.Add(3, "Suzanne Mathews", "France");
dt.Rows.Add(4, "Robert Schidner", "Russia");
this.GridView3.DataSource = dt;
this.GridView3.DataBind();
ViewState["UsingRowDeleting"] = dt;
ViewState["UsingLinkButtonOnClick"] = dt;
ViewState["UsingSelectedRow"] = dt;
}
}
protected void GridView3_OnSelectedIndexChanged(object sender, EventArgs e)
{
int index = this.GridView3.SelectedRow.RowIndex;
DataTable dt = (DataTable)ViewState["UsingSelectedRow"];
dt.Rows.RemoveAt(index);
this.GridView3.DataSource = dt;
this.GridView3.DataBind();
}