for循环中的问题 [英] Problem in for loop

问题描述

我遇到了问题，即，如果我从下拉列表中选择一个项目并按下按钮，它将进入grid2；如果我再次选择同一项目并按下按钮，则不会进入网格2显示标签项目已存在".现在，我从下拉列表中选择另一个项目，然后按一下按钮，再次允许它.现在，如果从grid2中已经存在的下拉列表中选择一个项目，那么最终它也将进入Grid2，这是不允许的.

I am having problem, i,e., if I choose an item from the dropdownlist and press the button, it enters into grid2 and if I again choose the same item and press the button, it does not enter into grid 2 showing a label "Item already exists" . Now that I choose a different item from the drop down list and press the button it is again allowed. Now if a select an item from the dropdown already present in the grid2 then ultimately it enters into Grid2 too which should not be allowed.

for (int i = 0; i < GridView2.Rows.Count; i++)
       {
           if (GridView2.Rows[i].Cells[11].Text==concat)
           {
               Label22.Visible = true;
               goto No;
              
           }
           else
           {
               break;
           }
       }

Label22.Visible = false;
        helper.InsertPlannedMaterialMasterRequest2(TextBox1.Text, TextBox2.Text, TextBox3.Text, TextBox6.Text, DropDownList2.SelectedValue, DropDownList3.SelectedValue, Convert.ToInt32(TextBox11.Text), DropDownList5.SelectedValue, Convert.ToInt32(DropDownList4.SelectedValue), Convert.ToInt32(TextBox13.Text), DropDownList6.SelectedValue,department, DateTime.Now,concat);
        LoadMasterRequests();
        LoadDetailRequests();
        LoadItems();
        BindData();
        BindData2();
        BindData3();
        goto d;
    No:
        Label22.Visible = true;
    d:
        TextBox6.Text = "";
        TextBox7.Text = "";
        TextBox11.Text = "";
        TextBox13.Text = "";

推荐答案

如果第一项不是所选的，则跳出循环

If the first item is not the selected one, you break out of the loop

if (GridView2.Rows[i].Cells[11].Text==concat)
{
    Label22.Visible = true;
    goto No;
}
else
{
    break; // Problem here
}

完全跳过else子句.

在我住的地方，人们会因为使用goto而被枪杀.

Skip the else clause altogether.

Where I live, people get shot for using goto''s.

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