如何使用ASP.NET仅检查gridview中的一个复选框

本文介绍了如何使用ASP.NET仅检查gridview中的一个复选框的处理方法，对大家解决问题具有一定的参考价值，需要的朋友们下面随着小编来一起学习吧！ 问题描述 protected void btnView_Click（对象发​​件人，EventArgs e） { foreach （GridViewRow行 in GridLeaveApproved.Rows） { CheckBox ch =（CheckBox）row.FindControl（ CheckBox1）; if （ch.Checked） { // 标签lblleaveid =（标签）row.FindControl（lblLid）; // int lid = Convert.ToInt32（lblleaveid.Text）; // 标签lbllid =（标签）row.FindControl（lblLId）; // int lid = Convert.ToInt32（lbllid.Text）; Label lblEid =（Label）row.FindControl（ lblEmpId）; string eid = lblEid.Text; cmd = new MySqlCommand（ 选择*来自empleaves，其中EmpId = @ eid，conn）; cmd.Parameters.AddWithValue（ @ eid，eid）; MySqlDataAdapter da = new MySqlDataAdapter（cmd）; DataSet ds = new DataSet（）; da.Fill（ds， newleave）; GridLeavesView.DataSource = ds.Tables [ newleave]; GridLeavesView.DataBind（）; } } GridLeavesView.Visible = true ; } i只想查看一个复选框。我正在尝试选择两个复选框，在单击查看按钮后显示错误消息（仅选择一个复选框）。 请帮助我朋友.. 我尝试了什么： protected void btnView_Click （对象发送者，EventArgs e） { foreach（GridLeaveApproved.Rows中的GridViewRow行） { CheckBox ch =（CheckBox）row.FindControl（CheckBox1）; if（ch.Checked） { // Label lblleaveid =（标签）row.FindControl（lblLid）; // int lid = Convert.ToInt32（lblleaveid.Text）; //标签lbllid =（标签）row.FindControl（lblLId）; // int lid = Convert.ToInt32（lbllid.Text）; Label lblEid =（Label）row.FindControl（ lblEmpId）; string eid = lblEid.Text; cmd = new MySqlCommand（select * from empleaves，其中EmpId = @ eid，conn）; cmd.Parameters.AddWithValue（ @eid，eid）; MySqlDataAdapter da = new MySqlDataAdapter（cmd）; DataSet ds = new DataSet（）; da。填充（ds，newleave）; GridLeavesView.DataSource = ds.Tables [newleave]; GridLeavesView.DataBind（）; } } GridLeavesView.Visible = true; } 解决方案 由于你已经标记了Asp.net和C＃，我使用c＃给你解决方案。 我希望你有一个标签来显示错误信息。 受保护 void btnView_Click（ object sender，EventArgs e） { lblMessage.Text = ; int count = 0 ; foreach （GridViewRow行 GridLeaveApproved.Rows） { CheckBox ch =（CheckBox）row.FindControl（ CheckBox1）; if （ch.Checked） { count ++; if （count > 1 ） { lblMessage.Text = 请只选择一行; return ; } } } foreach （GridViewRow行 in GridLeaveApproved.Rows） { CheckBox ch =（CheckBox）row.FindControl（ CheckBox1）; if （ch.Checked） { // 标签lblleaveid =（标签）row.FindControl（lblLid）; // int lid = Convert.ToInt32（lblleaveid.Text）; // 标签lbllid =（标签）row.FindControl（lblLId）; // int lid = Convert.ToInt32（lbllid.Text）; Label lblEid =（Label）row.FindControl（ lblEmpId）; string eid = lblEid.Text; cmd = new MySqlCommand（ 选择*来自empleaves，其中EmpId = @ eid，conn）; cmd.Parameters.AddWithValue（ @ eid，eid）; MySqlDataAdapter da = new MySqlDataAdapter（cmd）; DataSet ds = new DataSet（）; da.Fill（ds， newleave）; GridLeavesView.DataSource = ds.Tables [ newleave]; GridLeavesView.DataBind（）; } } GridLeavesView.Visible = true ; } 你也可以这样做.. foreach （DataGridViewRow行 GridLeaveApproved.Rows） { DataGridViewCheckBoxCell ch =（DataGridViewCheckBoxCell）row.Cells [ 1 ]; if （ch.Selected == true ） { // 执行代码检查 } else { // 如果未检查则执行代码 } } protected void btnView_Click(object sender, EventArgs e) { foreach (GridViewRow row in GridLeaveApproved.Rows) { CheckBox ch = (CheckBox)row.FindControl("CheckBox1"); if (ch.Checked) { //Label lblleaveid = (Label)row.FindControl("lblLid"); //int lid = Convert.ToInt32(lblleaveid.Text); //Label lbllid = (Label)row.FindControl("lblLId"); //int lid = Convert.ToInt32(lbllid.Text); Label lblEid = (Label)row.FindControl("lblEmpId"); string eid = lblEid.Text; cmd = new MySqlCommand("Select * from empleaves where EmpId=@eid ", conn); cmd.Parameters.AddWithValue("@eid", eid); MySqlDataAdapter da = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds, "newleave"); GridLeavesView.DataSource = ds.Tables["newleave"]; GridLeavesView.DataBind(); } } GridLeavesView.Visible = true; }i want to check only one checkbox. i am trying to select two checkboxes show error message like(only select one checkbox) when after clicking View Button.please help me friends..What I have tried:protected void btnView_Click(object sender, EventArgs e) { foreach (GridViewRow row in GridLeaveApproved.Rows) { CheckBox ch = (CheckBox)row.FindControl("CheckBox1"); if (ch.Checked) { //Label lblleaveid = (Label)row.FindControl("lblLid"); //int lid = Convert.ToInt32(lblleaveid.Text); //Label lbllid = (Label)row.FindControl("lblLId"); //int lid = Convert.ToInt32(lbllid.Text); Label lblEid = (Label)row.FindControl("lblEmpId"); string eid = lblEid.Text; cmd = new MySqlCommand("Select * from empleaves where EmpId=@eid ", conn); cmd.Parameters.AddWithValue("@eid", eid); MySqlDataAdapter da = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds, "newleave"); GridLeavesView.DataSource = ds.Tables["newleave"]; GridLeavesView.DataBind(); } } GridLeavesView.Visible = true; } 解决方案 Since you have tagged Asp.net and C#, i am giving you the solution using c#.and i hope you will be having a label to display the error message. protected void btnView_Click(object sender, EventArgs e) { lblMessage.Text = ""; int count = 0; foreach (GridViewRow row in GridLeaveApproved.Rows) { CheckBox ch = (CheckBox)row.FindControl("CheckBox1"); if (ch.Checked) { count++; if (count > 1) { lblMessage.Text = "Please select only one row"; return; } } } foreach (GridViewRow row in GridLeaveApproved.Rows) { CheckBox ch = (CheckBox)row.FindControl("CheckBox1"); if (ch.Checked) { //Label lblleaveid = (Label)row.FindControl("lblLid"); //int lid = Convert.ToInt32(lblleaveid.Text); //Label lbllid = (Label)row.FindControl("lblLId"); //int lid = Convert.ToInt32(lbllid.Text); Label lblEid = (Label)row.FindControl("lblEmpId"); string eid = lblEid.Text; cmd = new MySqlCommand("Select * from empleaves where EmpId=@eid ", conn); cmd.Parameters.AddWithValue("@eid", eid); MySqlDataAdapter da = new MySqlDataAdapter(cmd); DataSet ds = new DataSet(); da.Fill(ds, "newleave"); GridLeavesView.DataSource = ds.Tables["newleave"]; GridLeavesView.DataBind(); } } GridLeavesView.Visible = true; }You can also perform like this..foreach (DataGridViewRow row in GridLeaveApproved.Rows) { DataGridViewCheckBoxCell ch = (DataGridViewCheckBoxCell)row.Cells[1]; if (ch.Selected == true) { //do code if it checked } else { //do code if it not checked } } 这篇关于如何使用ASP.NET仅检查gridview中的一个复选框的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持！