如何解决输入数组的长度比列数多

问题描述

      protected void Add_Click(object sender, EventArgs e)
{
    GridView1.Visible = true;
    //createnewrow();
    ds.Rows.Add(TextBox1.Text, TextBox2.Text, TextBox3.Text);

    TextBox1.Text = "";
    TextBox2.Text = "";
    TextBox3.Text = "";

    GridView1.DataSource = ds;
    GridView1.DataBind();
    GridView1.DataSource = null;

}

我的尝试：



我尝试将数据添加到表中。它显示错误消息输入数组长于列数

What I have tried:

I try to add data to the table. It display an error message Input array is longer than the number of columns

推荐答案

引用：

输入数组长于列数

您正在尝试向dataRow添加更多列值，

You are trying to add more number of column values to the dataRow,

ds.Rows.Add(TextBox1.Text, TextBox2.Text, TextBox3.Text);

检查列数并添加正确的列值数

check the columns count and add correct number of column values

int colsCount =  dt.Columns.Count;

参考这个例子：

refer this example:

DataTable dt = new DataTable();
       dt.Columns.Add("Col1");
       dt.Rows.Add("Col1 Data"); // Valid
       dt.Rows.Add("Col1 Data", "Col2 Data"); // invalid ,  Input array is longer than the number of columns

protected void Add_Click(object sender, EventArgs e)
        {
            DataTable ds = new DataTable();

            ds.Columns.Add(new DataColumn("Col1", typeof(string)));
            ds.Columns.Add(new DataColumn("Col2", typeof(string)));
            ds.Columns.Add(new DataColumn("Col3", typeof(string)));
            GridView1.Visible = true;
            //createnewrow();
            
            ds.Rows.Add(TextBox1.Text, TextBox2.Text, TextBox3.Text);

            TextBox1.Text = "";
            TextBox2.Text = "";
            TextBox3.Text = "";

            GridView1.DataSource = ds;
            GridView1.DataBind();
            GridView1.DataSource = null;
        }

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