I'm adding dynamic Rows in ASP.Net GridView Control with TextBoxes. But I'm getting the error below when I click on my Add New Row button.
Specified argument was out of the range of valid values. Parameter name: index
What could be the error ?
Th code in my .aspx file
<div> <asp:gridview runat="server" autogeneratecolumns="false" gridlines="None" width="100%" height="100%"> <Columns> <asp:TemplateField> <ItemTemplate> <div> <div> <div> <asp:Label runat="server" Text="Type Name" CssClass="formLable"></asp:Label> </div> <div> <asp:TextBox Width="200" runat="server" CssClass="txtbox"></asp:TextBox> </div> <span> <asp:RequiredFieldValidator runat="server" ControlToValidate="txt_type" ErrorMessage="Type is required." Display="Dynamic" CssClass="error"></asp:RequiredFieldValidator> </span> </div> <div> <div> <asp:Label runat="server" Text="Total" CssClass="formLable"></asp:Label> </div> <div> <asp:TextBox Width="200" runat="server" CssClass="txtbox"></asp:TextBox> </div> </div> </div> <div> <div> <div> <asp:Label runat="server" Text="Max" CssClass="formLable"></asp:Label> </div> <div> <asp:TextBox Width="200" runat="server" CssClass="txtbox"></asp:TextBox> </div> </div> <div> <div> <asp:Label runat="server" Text="Min" CssClass="formLable"></asp:Label> </div> <div> <asp:TextBox Width="200" runat="server" CssClass="txtbox"></asp:TextBox> </div> </div> <div> <div> <asp:Label runat="server" Text="Rate" CssClass="formLable"></asp:Label> </div> <div> <asp:TextBox Width="200" runat="server" CssClass="txtbox"></asp:TextBox> </div> </div> </div> <asp:Button runat="server" Text="Add New Row" OnClick="ButtonAdd_Click" CausesValidation="False" /> </ItemTemplate> </asp:TemplateField> </Columns> </asp:gridview> </div> C# code of ButtonAdd_Click()
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("txt_type"); TextBox box2 = (TextBox)Gridview1.Rows[rowIndex].Cells[2].FindControl("txt_total"); TextBox box3 = (TextBox)Gridview1.Rows[rowIndex].Cells[3].FindControl("txt_max"); TextBox box4 = (TextBox)Gridview1.Rows[rowIndex].Cells[4].FindControl("txt_min"); TextBox box5 = (TextBox)Gridview1.Rows[rowIndex].Cells[5].FindControl("txt_rate"); drCurrentRow = dtCurrentTable.NewRow(); dtCurrentTable.Rows[i - 1]["Column1"] = box1.Text; dtCurrentTable.Rows[i - 1]["Column2"] = box2.Text; dtCurrentTable.Rows[i - 1]["Column3"] = box3.Text; dtCurrentTable.Rows[i - 1]["Column4"] = box4.Text; dtCurrentTable.Rows[i - 1]["Column5"] = box5.Text; rowIndex++; } dtCurrentTable.Rows.Add(drCurrentRow); ViewState["CurrentTable"] = dtCurrentTable; Gridview1.DataSource = dtCurrentTable; Gridview1.DataBind(); } } else { Response.Write("ViewState is null"); } 3 Answers
It seems that you are trying to get 5 items out of a collection with 5 items. Looking at your code, it seems you're starting at the second value in your collection at position 1. Collections are zero-based, so you should start with the item at index 0. Try this:
TextBox box1 = (TextBox)Gridview1.Rows[i].Cells[0].FindControl("txt_type"); TextBox box2 = (TextBox)Gridview1.Rows[i].Cells[1].FindControl("txt_total"); TextBox box3 = (TextBox)Gridview1.Rows[i].Cells[2].FindControl("txt_max"); TextBox box4 = (TextBox)Gridview1.Rows[i].Cells[3].FindControl("txt_min"); TextBox box5 = (TextBox)Gridview1.Rows[i].Cells[4].FindControl("txt_rate"); try this.
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[i].Cells[1].FindControl("txt_type"); TextBox box2 = (TextBox)Gridview1.Rows[i].Cells[2].FindControl("txt_total"); TextBox box3 = (TextBox)Gridview1.Rows[i].Cells[3].FindControl("txt_max"); TextBox box4 = (TextBox)Gridview1.Rows[i].Cells[4].FindControl("txt_min"); TextBox box5 = (TextBox)Gridview1.Rows[i].Cells[5].FindControl("txt_rate"); 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; dtCurrentTable.Rows[i - 1]["Column4"] = box4.Text; dtCurrentTable.Rows[i - 1]["Column5"] = box5.Text; rowIndex++; } dtCurrentTable.Rows.Add(drCurrentRow); ViewState["CurrentTable"] = dtCurrentTable; Gridview1.DataSource = dtCurrentTable; Gridview1.DataBind(); } } else { Response.Write("ViewState is null"); } I was also getting same issue as i tried using value 0 in non-based indexing,i.e starting with 1, not with zero
