I am working in a ASP.NET project in an empty web application in C# and I have made a gridview with CRUD operations. But when I execute my project and click on the buttons I have made it takes me to the first row and I then have to scroll back down again. It is really annoying but I do not know why it does that. Even though I have used MaintainScrollPositionOnPostBack="true" it does not work. Is there anything I cad add to my code or something I have to be aware of?
Default.aspx
<%@ Page Language="C#" MaintainScrollPositionOnPostBack="true" AutoEventWireup="true" CodeBehind="Default.aspx.cs" Inherits="TestUsers.Default" %>
<link href="TestUsers.css" rel="stylesheet" type="text/css" />
<!DOCTYPE html>
<link rel="stylesheet" href="TestUsers.css">
<link rel="shortcut icon" type="image/x-icon" href="~/orbitone.ico" />
<html xmlns="http://www.w3.org/1999/xhtml">
<head runat="server">
<title>ESDTESTERS</title>
<%-- <meta http-equiv="refresh" content="20">--%>
</head>
<body>
<form id="form1" runat="server">
<div>
<div style="margin-left: auto; margin-right: auto; text-align: center;">
<br /><br />
<asp:Button ID="Button2" runat="server" OnClick="Button2_Click" Text="Sing Out" />
<br /><br />
<asp:TextBox ID="TextBox1" runat="server" Width="200px"></asp:TextBox>
<asp:Button ID="Button1" runat="server" OnClick="Button1_Click" Text="Search" Width="100px" />
<br />
</div>
<asp:GridView ID="gvTestUsers" runat="server" AutoGenerateColumns="False" ShowFooter="True" DataKeyNames="tbl_users_key" ShowHeaderWhenEmpty="True" OnRowCommand="gvTestUsers_RowCommand" OnRowEditing="gvTestUsers_RowEditing" OnRowCancelingEdit="gvTestUsers_RowCancelingEdit"
OnRowDeleting="gvTestUsers_RowDeleting" OnRowUpdating="gvTestUsers_RowUpdating" HorizontalAlign="Center" OnPageIndexChanging="gvTestUsers_PageIndexChanged"
BackColor="#CCCCCC" BorderColor="#000000" BorderStyle="Solid" BorderWidth="3px" CellPadding="5" Width="1300px" CellSpacing="2" ForeColor="Black" PageSize="15" AllowPaging="True" >
<%--Theme Properties--%>
<FooterStyle BackColor="#CCCCCC" />
<HeaderStyle BackColor="Black" Font-Bold="True" Font-Size="Large" ForeColor="White" />
<PagerStyle BackColor="#CCCCCC" ForeColor="Black" HorizontalAlign="Left" />
<RowStyle BackColor="White" />
<SelectedRowStyle BackColor="#000099" Font-Bold="True" ForeColor="White" />
<SortedAscendingCellStyle BackColor="#F1F1F1" />
<SortedAscendingHeaderStyle BackColor="#808080" />
<SortedDescendingCellStyle BackColor="#CAC9C9" />
<SortedDescendingHeaderStyle BackColor="#383838" />
<Columns>
<asp:TemplateField HeaderText="tbl_users_key">
<ItemTemplate>
<asp:Label Text='<%# Eval("tbl_users_key") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtID" Text='<%# Eval("tbl_users_key") %>' runat="server" ReadOnly="true" />
</EditItemTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Name">
<ItemTemplate>
<asp:Label Text='<%# Eval("Name") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtName" ReadOnly="True" Text='<%# Eval("Name") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtNamefooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="CostCenter">
<ItemTemplate>
<asp:Label Text='<%# Eval("CostCenter") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtCostCenter" ReadOnly="True" Text='<%# Eval("CostCenter") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtCostCenterfooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Employee">
<ItemTemplate>
<asp:Label Text='<%# Eval("Employee") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtEmployee" ReadOnly="True" Text='<%# Eval("Employee") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtEmployeefooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="FootPlate">
<ItemTemplate>
<asp:Label Text='<%# Eval("FootPlate") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtFootPlate" Text='<%# Eval("FootPlate") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtFootPlatefooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="WirstCord">
<ItemTemplate>
<asp:Label Text='<%# Eval("WirstCord") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtWirstCord" Text='<%# Eval("WirstCord") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtWirstCordfooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Excluded">
<ItemTemplate>
<asp:Label Text='<%# Eval("Excluded") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtExcluded" Text='<%# Eval("Excluded") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtExcludedfooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField HeaderText="Comment">
<ItemTemplate>
<asp:Label Text='<%# Eval("Comment") %>' runat="server" />
</ItemTemplate>
<EditItemTemplate>
<asp:TextBox ID="txtComment" Text='<%# Eval("Comment") %>' runat="server" />
</EditItemTemplate>
<FooterTemplate>
<asp:TextBox ID="txtCommentfooter" runat="server" />
</FooterTemplate>
</asp:TemplateField>
<asp:TemplateField>
<ItemTemplate>
<asp:ImageButton ImageUrl="~/GridImages/edit.png" runat="server" CommandName="Edit" ToolTip="Edit" Width="20px" Height="20px" />
<asp:ImageButton ImageUrl="~/GridImages/delete.png" runat="server" CommandName="Delete" OnClientClick="return confirm('Are you sure you want to delete this record?');" ToolTip="Delete" Width="20px" Height="20px" />
</ItemTemplate>
<EditItemTemplate>
<asp:ImageButton ImageUrl="~/GridImages/save.png" runat="server" CommandName="Update" ToolTip="Update" Width="20px" Height="20px" />
<asp:ImageButton ImageUrl="~/GridImages/cancel.png" runat="server" CommandName="Cancel" ToolTip="Cancel" Width="20px" Height="20px" />
</EditItemTemplate>
<FooterTemplate>
<asp:ImageButton ImageUrl="~/GridImages/add.png" runat="server" CommandName="AddNew" ToolTip="Add New" Width="20px" Height="20px" />
</FooterTemplate>
</asp:TemplateField>
</Columns>
</asp:GridView>
<br />
<div style="margin-left: auto; margin-right: auto; text-align: center;">
<asp:Label ID="lblSuccessMessage" Text="" runat="server" ForeColor="Green" style="text-align:center" Font-Bold="true" Font-Size="x-Large" />
<br />
<asp:Label ID="lblErrorMessage" Text="" runat="server" ForeColor="Red" style="text-align:center" Font-Bold="true" Font-Size="x-Large" />
</div>
</div>
</form>
</body>
</html>
Default.aspx.cs
using System;
using System.Collections.Generic;
using System.Linq;
using System.Web;
using System.Web.UI;
using System.Web.UI.WebControls;
using System.Data.SqlClient;
using System.Data;
using System.Configuration;
namespace TestUsers
{
public partial class Default : System.Web.UI.Page
{
SqlConnection con = new SqlConnection(ConfigurationManager.ConnectionStrings["ConString"].ConnectionString);
string connectionString = ConfigurationManager.ConnectionStrings["ConString"].ConnectionString;
protected void Page_Load(object sender, EventArgs e)
{
if (!IsPostBack)
{
PopulateGridView();
}
}
void PopulateGridView()
{
DataTable dtbl = new DataTable();
string connectionString = ConfigurationManager.ConnectionStrings["ConString"].ConnectionString;
using (SqlConnection sqlCon = new SqlConnection(connectionString))
{
sqlCon.Open();
SqlDataAdapter sqlDa = new SqlDataAdapter("Select * FROM TBL_USERS", sqlCon);
sqlDa.Fill(dtbl);
}
if (dtbl.Rows.Count > 0)
{
gvTestUsers.DataSource = dtbl;
gvTestUsers.DataBind();
}
else
{
dtbl.Rows.Add(dtbl.NewRow());
gvTestUsers.DataSource = dtbl;
gvTestUsers.DataBind();
gvTestUsers.Rows[0].Cells.Clear();
gvTestUsers.Rows[0].Cells.Add(new TableCell());
gvTestUsers.Rows[0].Cells[0].ColumnSpan = dtbl.Columns.Count;
gvTestUsers.Rows[0].Cells[0].Text = "No Data Found.";
gvTestUsers.Rows[0].Cells[0].HorizontalAlign = HorizontalAlign.Center;
}
}
protected void gvTestUsers_RowCommand(object sender, GridViewCommandEventArgs e)
{
try
{
if (e.CommandName.Equals("AddNew"))
{
int tbl_users_key = 0;
TextBox myTxt;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtNamefooter"));
string Name;
Name = myTxt.Text;
string CostCenter;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtCostCenterfooter"));
CostCenter = myTxt.Text;
string Employee;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtEmployeefooter"));
Employee = myTxt.Text;
Boolean FootPlate;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtFootPlatefooter"));
FootPlate = Convert.ToBoolean(myTxt.Text);
Boolean WirstCord;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtWirstCordfooter"));
WirstCord = Convert.ToBoolean(myTxt.Text);
Boolean Excluded;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtExcludedfooter"));
Excluded = Convert.ToBoolean(myTxt.Text);
string Comment;
myTxt = ((TextBox)gvTestUsers.FooterRow.FindControl("txtCommentfooter"));
Comment = myTxt.Text;
string sMsg;
sMsg = "";
bool btest = fcEditTBL_USERS(tbl_users_key, Name, CostCenter, Employee, FootPlate, WirstCord, Excluded, Comment, ref sMsg,0);
if (btest == false)
{
lblErrorMessage.Text = sMsg;
lblSuccessMessage.Text = " ";
return;
}
PopulateGridView();
lblSuccessMessage.Text = Name " Was Added To Record.";
}
}
catch (Exception ex)
{
lblSuccessMessage.Text = "";
lblErrorMessage.Text = ex.Message;
}
}
protected void gvTestUsers_RowEditing(object sender, GridViewEditEventArgs e)
{
gvTestUsers.EditIndex = e.NewEditIndex;
PopulateGridView();
}
protected void gvTestUsers_RowCancelingEdit(object sender, GridViewCancelEditEventArgs e)
{
gvTestUsers.EditIndex = -1;
PopulateGridView();
}
protected void gvTestUsers_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
{
gvTestUsers.EditIndex = e.RowIndex;
PopulateGridView();
//Parameters for delete operation
string dltUsers_key = (gvTestUsers.Rows[e.RowIndex].FindControl("txtID") as TextBox).Text.Trim();
string dltName = (gvTestUsers.Rows[e.RowIndex].FindControl("txtName") as TextBox).Text.Trim();
string dltCostCenter = (gvTestUsers.Rows[e.RowIndex].FindControl("txtCostCenter") as TextBox).Text.Trim();
string dltEmployee = (gvTestUsers.Rows[e.RowIndex].FindControl("txtEmployee") as TextBox).Text.Trim();
string dltFootPlate = (gvTestUsers.Rows[e.RowIndex].FindControl("txtFootPlate") as TextBox).Text.Trim();
string dltWirstCord = (gvTestUsers.Rows[e.RowIndex].FindControl("txtWirstCord") as TextBox).Text.Trim();
string dltExcluded = (gvTestUsers.Rows[e.RowIndex].FindControl("txtExcluded") as TextBox).Text.Trim();
string dltComment = (gvTestUsers.Rows[e.RowIndex].FindControl("txtComment") as TextBox).Text.Trim();
string dltsMsg = "";
//Call function for SP_Delete
bool FuncDelete = fcEditTBL_USERS(Convert.ToInt32(dltUsers_key), dltName, dltCostCenter, dltEmployee, Convert.ToBoolean(dltFootPlate), Convert.ToBoolean(dltWirstCord), Convert.ToBoolean(dltExcluded), dltComment,ref dltsMsg,2);
if (FuncDelete == false)
{
lblErrorMessage.Text = dltsMsg;
lblSuccessMessage.Text = " ";
return;
}
PopulateGridView();
lblSuccessMessage.Text = "Selected Record Deleted.";
lblErrorMessage.Text = "";
gvTestUsers.EditIndex = -1;
}
}
catch (Exception ex)
{
lblSuccessMessage.Text = "";
lblErrorMessage.Text = ex.Message;
}
}
public bool fcEditTBL_USERS
(int tbl_users_key, string Name, string CostCenter, string Employee, bool FootPlate, bool WirstCord, bool Excluded, string Comment, ref string sMsg, int iMode)
{
string connectionString = ConfigurationManager.ConnectionStrings["ConString"].ConnectionString;
using (SqlConnection sqlCon = new SqlConnection(connectionString))
try
{
sqlCon.Open();
SqlCommand sqlCmd = new SqlCommand("spEditTBL_USERS", sqlCon);
sqlCmd.CommandType = CommandType.StoredProcedure;
SqlParameter returnParameter = sqlCmd.Parameters.Add(new SqlParameter("@RETURN_VALUE", DbType.Int32));
returnParameter.Direction = ParameterDirection.ReturnValue;
sqlCmd.Parameters.Add("@ID", SqlDbType.Int).Value=tbl_users_key ;
sqlCmd.Parameters.Add("@Name", SqlDbType.VarChar, 255).Value=Name;
sqlCmd.Parameters.Add("@CostCenter", SqlDbType.VarChar, 10).Value=CostCenter;
sqlCmd.Parameters.Add("@Employee", SqlDbType.VarChar, 32).Value=Employee;
sqlCmd.Parameters.Add("@FootPlate", SqlDbType.Bit).Value=FootPlate;
sqlCmd.Parameters.Add("@WirstCord", SqlDbType.Bit).Value=WirstCord;
sqlCmd.Parameters.Add("@Excluded", SqlDbType.Bit).Value=Excluded;
sqlCmd.Parameters.Add("@Comment", SqlDbType.VarChar, 255).Value=Comment;
sqlCmd.Parameters.Add("@MODE", SqlDbType.SmallInt).Value =iMode;
sqlCmd.Parameters.Add("@MSG", SqlDbType.NVarChar, 255).Value=sMsg;
sqlCmd.Parameters["@MSG"].Direction = ParameterDirection.Output;
sqlCmd.ExecuteNonQuery();
sMsg = sqlCmd.Parameters["@MSG"].Value.ToString();
int rtn = (int)sqlCmd.Parameters["@RETURN_VALUE"].Value;
if (rtn != 0)
{
return false;
}
sqlCmd.Dispose();
return true;
}
finally
{
}
}
protected void gvTestUsers_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
try
{
//Parameters Set From Grid
string tmpUsers_key = (gvTestUsers.Rows[e.RowIndex].FindControl("txtID") as TextBox).Text.Trim();
string tmpName = (gvTestUsers.Rows[e.RowIndex].FindControl("txtName") as TextBox).Text.Trim();
string tmpCostCenter = (gvTestUsers.Rows[e.RowIndex].FindControl("txtCostCenter") as TextBox).Text.Trim();
string tmpEmployee = (gvTestUsers.Rows[e.RowIndex].FindControl("txtEmployee") as TextBox).Text.Trim();
string tmpFootPlate = (gvTestUsers.Rows[e.RowIndex].FindControl("txtFootPlate") as TextBox).Text.Trim();
string tmpWirstCord = (gvTestUsers.Rows[e.RowIndex].FindControl("txtWirstCord") as TextBox).Text.Trim();
string tmpExcluded = (gvTestUsers.Rows[e.RowIndex].FindControl("txtExcluded") as TextBox).Text.Trim();
string tmpComment = (gvTestUsers.Rows[e.RowIndex].FindControl("txtComment") as TextBox).Text.Trim();
string tmpsMsg = "";
//Call function for SP_UPDATE
bool FuncResult = fcEditTBL_USERS(Convert.ToInt32(tmpUsers_key), tmpName, tmpCostCenter, tmpEmployee, Convert.ToBoolean(tmpFootPlate), Convert.ToBoolean(tmpWirstCord), Convert.ToBoolean(tmpExcluded), tmpComment,ref tmpsMsg,1);
//Reload Page
PopulateGridView();
lblSuccessMessage.Text = "Selected Record Updated.";
lblErrorMessage.Text = "";
}
catch (Exception ex)
{
lblSuccessMessage.Text = "";
lblErrorMessage.Text = ex.Message;
}
}
protected void gvTestUsers_PageIndexChanged(object sender, GridViewPageEventArgs e)
{
gvTestUsers.PageIndex = e.NewPageIndex;
PopulateGridView();
}
protected void Button1_Click(object sender, EventArgs e)
{
string find = "select * from TBL_USERS where (Name like '%' @Name '%') or (employee like '%' @Employee '%')";
SqlCommand comm = new SqlCommand (find,con);
comm.Parameters.Add("@Name", SqlDbType.VarChar, 255).Value = TextBox1.Text;
comm.Parameters.Add("@Employee", SqlDbType.VarChar, 32).Value = TextBox1.Text;
con.Open();
comm.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = comm;
DataSet ds = new DataSet();
da.Fill(ds, "Name");
da.Fill(ds, "Employee");
gvTestUsers.DataSource = ds;
gvTestUsers.DataBind();
con.Close();
}
protected void Button2_Click(object sender, EventArgs e)
{
Response.Redirect("LoginForm.aspx");
}
}
}
CodePudding user response：
Thank you for the explanation. Please try setting gridview editindex before populating the gridview (after updating and deleting ) Hope this helps. Working below code for me.
protected void gvTestUsers_RowUpdating(object sender, GridViewUpdateEventArgs e)
{
try
{
//Parameters Set From Grid
string tmpUsers_key = (gvTestUsers.Rows[e.RowIndex].FindControl("txtID") as TextBox).Text.Trim();
string tmpName = (gvTestUsers.Rows[e.RowIndex].FindControl("txtName") as TextBox).Text.Trim();
string tmpCostCenter = (gvTestUsers.Rows[e.RowIndex].FindControl("txtCostCenter") as TextBox).Text.Trim();
string tmpEmployee = (gvTestUsers.Rows[e.RowIndex].FindControl("txtEmployee") as TextBox).Text.Trim();
string tmpFootPlate = (gvTestUsers.Rows[e.RowIndex].FindControl("txtFootPlate") as TextBox).Text.Trim();
string tmpWirstCord = (gvTestUsers.Rows[e.RowIndex].FindControl("txtWirstCord") as TextBox).Text.Trim();
string tmpExcluded = (gvTestUsers.Rows[e.RowIndex].FindControl("txtExcluded") as TextBox).Text.Trim();
string tmpComment = (gvTestUsers.Rows[e.RowIndex].FindControl("txtComment") as TextBox).Text.Trim();
string tmpsMsg = "";
//Call function for SP_UPDATE
bool FuncResult = fcEditTBL_USERS(Convert.ToInt32(tmpUsers_key), tmpName, tmpCostCenter, tmpEmployee, tmpFootPlate, tmpWirstCord, tmpExcluded, tmpComment, ref tmpsMsg, "Update");
//add this
gvTestUsers.EditIndex = -1;
PopulateGridView();
lblSuccessMessage.Text = "Selected Record Updated.";
lblErrorMessage.Text = "";
}
catch (Exception ex)
{
lblSuccessMessage.Text = "";
lblErrorMessage.Text = ex.Message;
}
}
And the row deleting below,
protected void gvTestUsers_RowDeleting(object sender, GridViewDeleteEventArgs e)
{
try
{
{
gvTestUsers.EditIndex = e.RowIndex;
PopulateGridView();
//Parameters for delete operation
string dltUsers_key = (gvTestUsers.Rows[e.RowIndex].FindControl("txtID") as TextBox).Text.Trim();
string dltName = (gvTestUsers.Rows[e.RowIndex].FindControl("txtName") as TextBox).Text.Trim();
string dltCostCenter = (gvTestUsers.Rows[e.RowIndex].FindControl("txtCostCenter") as TextBox).Text.Trim();
string dltEmployee = (gvTestUsers.Rows[e.RowIndex].FindControl("txtEmployee") as TextBox).Text.Trim();
string dltFootPlate = (gvTestUsers.Rows[e.RowIndex].FindControl("txtFootPlate") as TextBox).Text.Trim();
string dltWirstCord = (gvTestUsers.Rows[e.RowIndex].FindControl("txtWirstCord") as TextBox).Text.Trim();
string dltExcluded = (gvTestUsers.Rows[e.RowIndex].FindControl("txtExcluded") as TextBox).Text.Trim();
string dltComment = (gvTestUsers.Rows[e.RowIndex].FindControl("txtComment") as TextBox).Text.Trim();
string dltsMsg = "";
//Call function for SP_Delete
bool FuncDelete = fcEditTBL_USERS(Convert.ToInt32(dltUsers_key), dltName, dltCostCenter, dltEmployee, dltFootPlate, dltWirstCord,dltExcluded, dltComment, ref dltsMsg, "Delete");
if (FuncDelete == false)
{
lblErrorMessage.Text = dltsMsg;
lblSuccessMessage.Text = " ";
return;
}
gvTestUsers.EditIndex = -1;
PopulateGridView();
lblSuccessMessage.Text = "Selected Record Deleted.";
lblErrorMessage.Text = "";
}
}
catch (Exception ex)
{
lblSuccessMessage.Text = "";
lblErrorMessage.Text = ex.Message;
}
}
CodePudding user response：
I solved it by moving the SearchBox-Event code into my PopulateGridView. So now the PopulateGridView looks like this:
void PopulateGridView()
{
string find = "select * from TBL_USERS where (Name like '%' @Name '%') or (employee like '%' @Employee '%')";
SqlCommand comm = new SqlCommand(find, con);
comm.Parameters.Add("@Name", SqlDbType.VarChar, 255).Value = TextBox1.Text;
comm.Parameters.Add("@Employee", SqlDbType.VarChar, 32).Value = TextBox1.Text;
con.Open();
comm.ExecuteNonQuery();
SqlDataAdapter da = new SqlDataAdapter();
da.SelectCommand = comm;
DataSet ds = new DataSet();
da.Fill(ds, "Name");
da.Fill(ds, "Employee");
gvTestUsers.DataSource = ds;
gvTestUsers.DataBind();
con.Close();
}
And the Searchbox-Event:
protected void Button1_Click(object sender, EventArgs e)
{
PopulateGridView();
}
Else it would jump straight to Void PopulateGridView each time I would try to use an EDIT,CREATE or DELETE operation.