如何从C#中的组合框获取特定值? [英] how to fetch particular Value from Combobox in C#?

问题描述

我的表单中有2个组合框.
当我从combobox2中选择任何值时，我需要设置
的索引 基于combobox2的选定值的combobox1.
因此，我编写了如下代码:

Hi,

I have 2 Comboboxes in my form.
When I select any value from combobox2, I need to set the index of
combobox1 based on the selectedvalue of combobox2.
So, I wrote the code like:

public void SetDropDownIndex(System.Windows.Forms.ComboBox  DdList, string CellText)
    {
        int i;
        for (i = 0; i <= DdList.Items.Count - 1; i++)
        {
            //if (DdList.Items[i].ToString() == CellText.ToString())
            if (DdList.Text == CellText.ToString())
            {
                DdList.SelectedIndex = i;
                break;
            }
        }
        //return i;
    }

CellText-这是Combobox2.Text(选中的项目)
当我检查Ddlist Count时，它显示得很好，但是如果我要访问Ddlist.Items [0] .Tostring()，它会给我System.Data.Datarow.

CellText- This is Combobox2.Text (The Item which is selected)
When I check Ddlist Count it is showing perfectly,but if I want to access Ddlist.Items[0].Tostring(), it gives me System.Data.Datarow.

推荐答案

尝试一下:

Try this:

int index = DdList.FindExactString(CellText.ToString());
if (index >= 0)
{
    DdList.SelectedIndex = index;
}
else
{
    // handle the fact that DdList doesn''t contain the string
}

尝试一下

Try this

private void comboBox2_SelectedIndexChanged(object sender, EventArgs e)
        {
            if (comboBox1.Items.Contains(comboBox2.Text))
            {
                comboBox1.SelectedIndex= comboBox1.Items.IndexOf(comboBox2.Text);
            }
        }

这篇关于如何从C#中的组合框获取特定值?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IT屋！