C#RichTextBox 文字查詢與替換
阿新 • • 發佈：2019-01-29
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把 查詢,替換,全部替換 三個button 的 Enabled 設定為 false ,f替換內容TextBox Enabled 也設定為false , CheckBox2 為選中....
在主窗體中 關聯一個函式就可以了,主窗體關聯如下: Form_Mxdr.RichTextBox .Name=txtInput;
/// <summary>獲取 Form_Mxdr.RichTextBox<para> <para> /// 獲取 RichTextBox 的讀寫操作許可權</para></para> </summary> public RichTextBox RichTxtBox { get { return this.txtInput; } set { this.txtInput = value; } }
查詢窗體程式碼: 向上查詢無法區分大小寫 ,全部替換隻能替換查詢內容限定區分出的大寫或小寫字母進行轉換...
public partial class formFind : Form { public formFind() { InitializeComponent(); } private void formFind_Load(object sender, EventArgs e) { radioButton2.Checked = true; } #region ***********全域性變數************* int start = 0; int sun = 0; int count = 0; #endregion #region =★*★*★= 四個 Button 點選事件 =★*★*★= private void button1_Click(object sender, EventArgs e) { Form_Mxdr f1 = (Form_Mxdr)this.Owner; RichTextBox rbox = f1.RichTxtBox; string str = this.textBox1.Text; if (this.checkBox1.Checked) //是否區分大小寫 { this.FindDownM(rbox, str); } else { if (this.radioButton2.Checked) { this.FindDown(rbox, str); } else { this.FindUp(rbox, str); } } } private void button2_Click(object sender, EventArgs e) { string str0=this.textBox1.Text, str1 = this.textBox2.Text; this.replace(str0, str1); } private void button3_Click(object sender, EventArgs e) { Form_Mxdr f1 = (Form_Mxdr)this.Owner; RichTextBox rbox = f1.RichTxtBox; string str0 = textBox1.Text, str1 = textBox2.Text; this.ReplaceAll(rbox, str0, str1); } private void button4_Click(object sender, EventArgs e) { this.Close(); } #endregion #region =★*★*★= 〖查詢替換〗 函式 =★*★*★= /// <summary>向上查詢指定字元 或 字串 (不區分大小寫)<para> <para> /// 引數1(rbox):內容文字框,指定為 RichTextBox 文字框型別<para> /// 引數2(str):使用者指定要查詢的字串</para> /// </para></para> </summary> /// <param name="rbox">內容文字框,指定為 RichTextBox 文字框型別</param> /// <param name="str">使用者指定要查詢的字串</param> private void FindUp(RichTextBox rbox, string str) { int rboxL = rbox.SelectionStart; int index = rbox.Find(str, 0, rboxL, RichTextBoxFinds.Reverse); if (index > -1) { rbox.SelectionStart = index; rbox.SelectionLength = str.Length; sun++; rbox.Focus(); } else if (index < 0) { seeks(str); sun = 0; //如果還想再找一遍,新增下面這句 //rbox.SelectionStart = rbox.Text.Length; } } /// <summary>向下查詢指定字元 或 字串 (不區分大小寫)<para> <para> /// 引數1(rbox):內容文字框,指定為 RichTextBox 文字框型別 /// <para>引數2(str):使用者指定要查詢的字串</para> /// </para></para> </summary> /// <param name="rbox">內容文字框,指定為 RichTextBox 文字框型別</param> /// <param name="str">使用者指定要查詢的字串</param> private void FindDown(RichTextBox rbox, string str) { int rboxL = rbox.Text.Length; if (start < rboxL) { start = rbox.Find(str, start, RichTextBoxFinds.None); int los = rbox.SelectionStart + str.Length; if ((start < 0) || (start > rboxL)) { if (count == 0) { this.seeks(str); start = los; sun = 0; } else { this.seeks(str); start = los; sun = 0; } } else if (start == rboxL || start < 0) { this.seeks(str); start = los; sun = 0; } else { sun++; start = los; rbox.Focus(); } } else if (start == rboxL || start < 0) { int los = rbox.SelectionStart + str.Length; this.seeks(str); start = los; sun = 0; } else { int los = rbox.SelectionStart + str.Length; this.seeks(str); start = los; sun = 0; } } /// <summary>向下查詢指定字元 或 字串 (限定大小寫)<para> <para> /// 引數1(rbox):內容文字框,指定為 RichTextBox 文字框型別 /// <para>引數2(str):使用者指定要查詢的字串</para> /// </para></para> </summary> /// <param name="rbox">內容文字框,指定為 RichTextBox 文字框型別</param> /// <param name="str">使用者指定要查詢的字串</param> private void FindDownM(RichTextBox rbox, string str) { int rboxL = rbox.Text.Length; if (start < rboxL) { start = rbox.Find(str, start, RichTextBoxFinds.MatchCase); int los = rbox.SelectionStart + str.Length; if ((start < 0) || (start > rboxL)) { if (count == 0) { this.seeks(str); start = los; sun = 0; } else { this.seeks(str); start = los; sun = 0; } } else if (start == rboxL || start < 0) { this.seeks(str); start = los; sun = 0; } else { sun++; start = los; rbox.Focus(); } } else if (start == rboxL || start < 0) { int los = rbox.SelectionStart + str.Length; this.seeks(str); start = los; sun = 0; } else { int los = rbox.SelectionStart + str.Length; this.seeks(str); start = los; sun = 0; } } /// <summary> 訊息提示,提示使用者查詢結果<para> <para> /// 引數1(str):使用者指定要查詢的字串</para></para> </summary> /// <param name="str">使用者指定要查詢的字串</param> private void seeks(string str) { if (sun != 0) MessageBox.Show(string.Format("已查詢完畢,共〖{0}〗個 \"{1}\"！", sun, str), "查詢 - 溫馨提示"); else MessageBox.Show(string.Format("沒有查詢到 \"{0}\"！", str), "查詢 - 溫馨提示"); } /// <summary> 全部替換指定〖字元 或 字串〗<para> <para> /// 引數1(rbox):要替換內容的文字框,指定為 RichTextBox 文字框型別<para> /// 引數2(str0):指定〖原有〗的內容(查詢內容)</para><para> /// 引數3(str1):指定〖新〗的內容(替換內容)</para></para></para> </summary> /// <param name="rbox">要替換內容的文字框,指定為 RichTextBox 文字框型別</param> /// <param name="str0">指定〖原有〗的內容(查詢內容)</param> /// <param name="str1">指定〖新〗的內容(替換內容)</param> private void ReplaceAll(RichTextBox rbox, string str0, string str1) { rbox.Text = rbox.Text.Replace(str0, str1); } /// <summary>單次替換字元或字串<para> <para> /// 引數1(str0):查詢的內容<para> /// 引數2(str1):要替換的內容 /// </para> </para></para> </summary> /// <param name="str0">查詢的內容</param> /// <param name="str1">要替換的內容</param> private void replace(string str0,string str1) { Form_Mxdr f1 = (Form_Mxdr)this.Owner; RichTextBox rbox = f1.RichTxtBox; rbox.SelectionLength = str0.Length; rbox.SelectedText = str1;//textBox2中放要替換的字元 } #endregion private void textBox1_TextChanged(object sender, EventArgs e) { this.button1.Enabled = true; } private void checkBox2_CheckedChanged(object sender, EventArgs e) { if (this.checkBox2.Checked) { this.textBox2.Enabled = true; this.button1.Enabled = true; this.button2.Enabled = true; this.button3.Enabled = true; } else { this.textBox2.Enabled = false; this.button2.Enabled = false; this.button3.Enabled = false; } } }
把button .Enabled 設定為false 後應該在 textBox1文字內容更改事件中把值設定回true.........
private void textBox1_TextChanged(object sender, EventArgs e)
{
this.button1.Enabled = true;
}