问题描述
嗨
我想在gridview上显示数据。当我点击添加按钮,表格数据相同时,想要在同一表格上的gridview中显示。使用以下代码,但它显示null引用是此行上对象的实例: - DataRow mydr = mydt.NewRow();
protected void btnAddDocs_Click(object发件人,EventArgs e)
{
mydt =(DataTable)(ViewState [Emp_docs]);
string var = EmpDocs() ;
DataRow mydr = mydt.NewRow();
mydr [Month] = Drdwmonth.SelectedValue.ToString()。Trim();
mydr [Salary_Slip_No] = txtsalaryslip_no.Text;
mydr [Emp_Name] = txtName.Text;
mydr [Emp_Code] = txtemp_code。文字;
mydr [Upload_Date] = txtcalender.Text;
mydr [Salary_URL] = var;
mydt.Rows。添加(mydr);
dt.OpenCon();
SqlCommand cmd = new SqlCommand();
cmd.Connection = dt.SqlCon ;
cmd.CommandType = CommandType.StoredProcedure;
cmd .CommandText =SP_Upload_Salary_Slip;
试试
{
cmd.Parameters.Add(@ Emp_Name ,SqlDbType.NVarChar).Value = txtName.Text;
cmd.Parameters.Add(@ Salary_Slip_No,SqlDbType.NVarChar).Value = txtsalaryslip_no.Text;
cmd.Parameters.Add(@ Upload_Date,SqlDbType.DateTime).Value = txtcalender.Text;
cmd.Parameters.Add(@ Month,SqlDbType.NVarChar).Value = Drdwmonth .SelectedValue.ToString()。修剪();
if(txtemp_code.Text ==)
{
cmd.Parameters.Add(@ Emp_Code,SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
cmd.Parameters.Add(@ Emp_Code,SqlDbType.NVarChar).Value = txtemp_code.Text;
}
Hi
I want to show data on gridview. when i click on add button that form data same want display in gridview on same form. Following code is used but it shows null reference is an instance of an object on this row:- DataRow mydr = mydt.NewRow();
protected void btnAddDocs_Click(object sender, EventArgs e)
{
mydt = (DataTable)(ViewState["Emp_docs"]);
string var = EmpDocs();
DataRow mydr = mydt.NewRow();
mydr["Month"] = Drdwmonth.SelectedValue.ToString().Trim();
mydr["Salary_Slip_No"] = txtsalaryslip_no.Text;
mydr["Emp_Name"] = txtName.Text;
mydr["Emp_Code"] = txtemp_code.Text;
mydr["Upload_Date"] = txtcalender.Text;
mydr["Salary_URL"] = var;
mydt.Rows.Add(mydr);
dt.OpenCon();
SqlCommand cmd = new SqlCommand();
cmd.Connection = dt.SqlCon;
cmd.CommandType = CommandType.StoredProcedure;
cmd.CommandText = "SP_Upload_Salary_Slip";
try
{
cmd.Parameters.Add("@Emp_Name", SqlDbType.NVarChar).Value = txtName.Text;
cmd.Parameters.Add("@Salary_Slip_No", SqlDbType.NVarChar).Value = txtsalaryslip_no.Text;
cmd.Parameters.Add("@Upload_Date", SqlDbType.DateTime).Value = txtcalender.Text;
cmd.Parameters.Add("@Month", SqlDbType.NVarChar).Value = Drdwmonth.SelectedValue.ToString().Trim();
if (txtemp_code.Text == "")
{
cmd.Parameters.Add("@Emp_Code", SqlDbType.NVarChar).Value = DBNull.Value;
}
else
{
cmd.Parameters.Add("@Emp_Code", SqlDbType.NVarChar).Value = txtemp_code.Text;
}
这篇关于当我点击提交按钮时如何填写Gridview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!