Hi, , , frnds I am having the column names in the dropdown list when I can select one column name means that column data should be display in the gridview

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hi,,, frnds i am having the column names in the dropdown list when i can select one column name means that column data should be display in the gridview

What I have tried:

protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
{
    if (DropDownList2.SelectedIndex != 0)
    {
        cmd = new SqlCommand("select * from " + DropDownList2.SelectedItem.Value, con);
        da = new SqlDataAdapter(cmd);
        DataTable dt = new DataTable();
        da.Fill(dt);
        GridView1.DataSource = dt;
        GridView1.DataBind();
    }
}

Posted 6-Jun-17 0:14am

Member 13207592

Updated 6-Jun-17 1:08am

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Comments

jimmson 6-Jun-17 6:23am

Your question is missing a question.

F-ES Sitecore 6-Jun-17 7:18am

You have to be about the third person to ask this question. Can you guys not just all get together after class and solve the problem among yourselves?

ZurdoDev 6-Jun-17 7:42am

Why 3 commas? It's very distracting.

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Karthik_Mahalingam · Accepted Answer · 2017-06-06T01:07:00

try

protected void DropDownList2_SelectedIndexChanged(object sender, EventArgs e)
       {

           if (DropDownList2.SelectedIndex != 0)
           {
               string columnName = DropDownList2.SelectedItem.Value;
               string tableName ="Your_Table_Name";
               string query = string.Format("select {0} from {1}", columnName, tableName);
               cmd = new SqlCommand(query, con);
               da = new SqlDataAdapter(cmd);
               DataTable dt = new DataTable();
               da.Fill(dt);
               GridView1.DataSource = dt;
               GridView1.DataBind();
           }
       }

Note: Take care of SQL Injection[^]