C# 列标题文本可以';由于索引超出范围而设置的t
我有两个方法可以在点击按钮后运行,C# 列标题文本可以';由于索引超出范围而设置的t,c#,sql,datagridview,C#,Sql,Datagridview,我有两个方法可以在点击按钮后运行,bgEqptRec()和receiveHeader()。bgEqptRec()包含设置列标题的receiveheader()。但无法设置,因为索引超出范围。我非常确定我使用的是SQL Server中正确的索引编号。代码如下: private void btnSearch_Click(object sender, EventArgs e) { bgEqptRec(); } private void bgEqptRec() {
bgEqptRec()
和receiveHeader()
。bgEqptRec()
包含设置列标题的receiveheader()
。但无法设置,因为索引超出范围。我非常确定我使用的是SQL Server中正确的索引编号。代码如下:
private void btnSearch_Click(object sender, EventArgs e)
{
bgEqptRec();
}
private void bgEqptRec()
{
receiveHeader();
gvSearch.DataSource = null;
using (var connect = connection.getConnection())
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM receive WHERE rec_stat='IN' AND rec_date BETWEEN '" + dtpFrom.Text + "' AND '" + dtpTo.Text + "'"))
{
cmd.Connection = connect;
cmd.CommandType = CommandType.Text;
using (SqlDataAdapter da = new SqlDataAdapter(cmd))
{
using (DataTable dt = new DataTable())
{
da.Fill(dt);
gvSearch.DataSource = dt;
}
}
}
}
}
private void receiveHeader()
{
gvSearch.Columns[0].HeaderText = "Supplier";
gvSearch.Columns[1].HeaderText = "Invoice";
gvSearch.Columns[2].HeaderText = "Brand";
gvSearch.Columns[3].HeaderText = "Model";
gvSearch.Columns[4].HeaderText = "Equipment";
gvSearch.Columns[5].HeaderText = "Serial No.";
gvSearch.Columns[6].HeaderText = "Price";
gvSearch.Columns[7].HeaderText = "PO No.";
gvSearch.Columns[8].HeaderText = "Release Date";
gvSearch.Columns[9].HeaderText = "Release By";
gvSearch.Columns[10].HeaderText = "Status";
}
VS给出的错误是“索引超出范围。必须是非负的并且小于集合的大小。”希望问题是:在调用
receiveHeader()时
method网格的数据源要么为空,要么为小于11的几列,因为您使用的是columns[10]
。因此,我建议您在为网格分配数据源后调用该方法。确保查询返回至少11列。这意味着代码如下所示:
using (var connect = connection.getConnection())
{
using (SqlCommand cmd = new SqlCommand("SELECT * FROM receive WHERE rec_stat='IN' AND rec_date BETWEEN '" + dtpFrom.Text + "' AND '" + dtpTo.Text + "'"))
{
// rest of code
gvSearch.DataSource = dt;
}
}
// call the method here since the grid is populated
receiveHeader();
您是否在此行中遇到错误:
gvSearch.Columns[0]
执行一个简单的测试,查看哪些列可用-在debug和watch gvSearch.Columns中,或者只是循环并打印每个columnn索引和字段名。。。